diff --git a/CHANGELOG.adoc b/CHANGELOG.adoc
index 48bc35f..f61467b 100644
--- a/CHANGELOG.adoc
+++ b/CHANGELOG.adoc
@@ -9,6 +9,7 @@
 - dtmm: indicate when a deployment is necessary
 - dtmm: check for Steam game update before deployment
 - dtmm: remove unused bundles from previous deployment
+- dtmm: show dialog for critical errors
 
 === Fixed
 
diff --git a/Cargo.lock b/Cargo.lock
index 2709c2c..5f2a35a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -705,6 +705,7 @@ dependencies = [
  "druid",
  "dtmt-shared",
  "futures",
+ "lazy_static",
  "oodle-sys",
  "path-slash",
  "sdk",
diff --git a/crates/dtmm/Cargo.toml b/crates/dtmm/Cargo.toml
index 261a994..5e11a9b 100644
--- a/crates/dtmm/Cargo.toml
+++ b/crates/dtmm/Cargo.toml
@@ -26,3 +26,4 @@ tokio-stream = { version = "0.1.12", features = ["fs"] }
 path-slash = "0.2.1"
 time = { version = "0.3.20", features = ["serde", "serde-well-known", "local-offset"] }
 strip-ansi-escapes = "0.1.1"
+lazy_static = "1.4.0"
diff --git a/crates/dtmm/src/controller/app.rs b/crates/dtmm/src/controller/app.rs
index c2f5962..3a8adc5 100644
--- a/crates/dtmm/src/controller/app.rs
+++ b/crates/dtmm/src/controller/app.rs
@@ -14,13 +14,13 @@ use tokio_stream::wrappers::ReadDirStream;
 use tokio_stream::StreamExt;
 use zip::ZipArchive;
 
-use crate::state::{ModInfo, PackageInfo, State};
+use crate::state::{ActionState, ModInfo, PackageInfo};
 use crate::util::config::{ConfigSerialize, LoadOrderEntry};
 
 use super::read_sjson_file;
 
 #[tracing::instrument(skip(state))]
-pub(crate) async fn import_mod(state: State, info: FileInfo) -> Result<ModInfo> {
+pub(crate) async fn import_mod(state: ActionState, info: FileInfo) -> Result<ModInfo> {
     let data = fs::read(&info.path)
         .await
         .wrap_err_with(|| format!("failed to read file {}", info.path.display()))?;
@@ -95,16 +95,16 @@ pub(crate) async fn import_mod(state: State, info: FileInfo) -> Result<ModInfo>
 
     tracing::trace!(?files);
 
-    let mod_dir = state.get_mod_dir();
+    let mod_dir = state.mod_dir;
 
     tracing::trace!("Creating mods directory {}", mod_dir.display());
-    fs::create_dir_all(&mod_dir)
+    fs::create_dir_all(Arc::as_ref(&mod_dir))
         .await
         .wrap_err_with(|| format!("failed to create data directory {}", mod_dir.display()))?;
 
     tracing::trace!("Extracting mod archive to {}", mod_dir.display());
     archive
-        .extract(&mod_dir)
+        .extract(Arc::as_ref(&mod_dir))
         .wrap_err_with(|| format!("failed to extract archive to {}", mod_dir.display()))?;
 
     let packages = files
@@ -117,8 +117,8 @@ pub(crate) async fn import_mod(state: State, info: FileInfo) -> Result<ModInfo>
 }
 
 #[tracing::instrument(skip(state))]
-pub(crate) async fn delete_mod(state: State, info: &ModInfo) -> Result<()> {
-    let mod_dir = state.get_mod_dir().join(&info.id);
+pub(crate) async fn delete_mod(state: ActionState, info: &ModInfo) -> Result<()> {
+    let mod_dir = state.mod_dir.join(&info.id);
     fs::remove_dir_all(&mod_dir)
         .await
         .wrap_err_with(|| format!("failed to remove directory {}", mod_dir.display()))?;
@@ -127,7 +127,7 @@ pub(crate) async fn delete_mod(state: State, info: &ModInfo) -> Result<()> {
 }
 
 #[tracing::instrument(skip(state))]
-pub(crate) async fn save_settings(state: State) -> Result<()> {
+pub(crate) async fn save_settings(state: ActionState) -> Result<()> {
     let cfg = ConfigSerialize::from(&state);
 
     tracing::info!("Saving settings to '{}'", state.config_path.display());
diff --git a/crates/dtmm/src/controller/game.rs b/crates/dtmm/src/controller/game.rs
index a69691c..9260908 100644
--- a/crates/dtmm/src/controller/game.rs
+++ b/crates/dtmm/src/controller/game.rs
@@ -22,7 +22,7 @@ use tokio::io::AsyncWriteExt;
 use tracing::Instrument;
 
 use super::read_sjson_file;
-use crate::state::{PackageInfo, State};
+use crate::state::{ActionState, PackageInfo};
 
 const MOD_BUNDLE_NAME: &str = "packages/mods";
 const BOOT_BUNDLE_NAME: &str = "packages/boot";
@@ -100,7 +100,7 @@ where
 }
 
 #[tracing::instrument(skip_all)]
-async fn patch_game_settings(state: Arc<State>) -> Result<()> {
+async fn patch_game_settings(state: Arc<ActionState>) -> Result<()> {
     let settings_path = state.game_dir.join("bundle").join(SETTINGS_FILE_PATH);
 
     let settings = read_file_with_backup(&settings_path)
@@ -146,7 +146,7 @@ fn make_package(info: &PackageInfo) -> Result<Package> {
     Ok(pkg)
 }
 
-fn build_mod_data_lua(state: Arc<State>) -> String {
+fn build_mod_data_lua(state: Arc<ActionState>) -> String {
     let mut lua = String::from("return {\n");
 
     // DMF is handled explicitely by the loading procedures, as it actually drives most of that
@@ -203,7 +203,7 @@ fn build_mod_data_lua(state: Arc<State>) -> String {
 }
 
 #[tracing::instrument(skip_all)]
-async fn build_bundles(state: Arc<State>) -> Result<Vec<Bundle>> {
+async fn build_bundles(state: Arc<ActionState>) -> Result<Vec<Bundle>> {
     let mut mod_bundle = Bundle::new(MOD_BUNDLE_NAME.to_string());
     let mut tasks = Vec::new();
 
@@ -227,7 +227,7 @@ async fn build_bundles(state: Arc<State>) -> Result<Vec<Bundle>> {
         let span = tracing::trace_span!("building mod packages", name = mod_info.name);
         let _enter = span.enter();
 
-        let mod_dir = state.get_mod_dir().join(&mod_info.id);
+        let mod_dir = state.mod_dir.join(&mod_info.id);
         for pkg_info in &mod_info.packages {
             let span = tracing::trace_span!("building package", name = pkg_info.name);
             let _enter = span.enter();
@@ -320,7 +320,7 @@ async fn build_bundles(state: Arc<State>) -> Result<Vec<Bundle>> {
 }
 
 #[tracing::instrument(skip_all)]
-async fn patch_boot_bundle(state: Arc<State>) -> Result<Vec<Bundle>> {
+async fn patch_boot_bundle(state: Arc<ActionState>) -> Result<Vec<Bundle>> {
     let bundle_dir = Arc::new(state.game_dir.join("bundle"));
     let bundle_path = bundle_dir.join(format!("{:x}", Murmur64::hash(BOOT_BUNDLE_NAME.as_bytes())));
 
@@ -381,7 +381,7 @@ async fn patch_boot_bundle(state: Arc<State>) -> Result<Vec<Bundle>> {
         let bundle_name = Murmur64::hash(&pkg_info.name)
             .to_string()
             .to_ascii_lowercase();
-        let src = state.get_mod_dir().join(&mod_info.id).join(&bundle_name);
+        let src = state.mod_dir.join(&mod_info.id).join(&bundle_name);
 
         {
             let bin = fs::read(&src)
@@ -461,7 +461,7 @@ async fn patch_boot_bundle(state: Arc<State>) -> Result<Vec<Bundle>> {
 }
 
 #[tracing::instrument(skip_all, fields(bundles = bundles.as_ref().len()))]
-async fn patch_bundle_database<B>(state: Arc<State>, bundles: B) -> Result<()>
+async fn patch_bundle_database<B>(state: Arc<ActionState>, bundles: B) -> Result<()>
 where
     B: AsRef<[Bundle]>,
 {
@@ -499,7 +499,7 @@ where
 }
 
 #[tracing::instrument(skip_all, fields(bundles = bundles.as_ref().len()))]
-async fn write_deployment_data<B>(state: Arc<State>, bundles: B) -> Result<()>
+async fn write_deployment_data<B>(state: Arc<ActionState>, bundles: B) -> Result<()>
 where
     B: AsRef<[Bundle]>,
 {
@@ -525,7 +525,7 @@ where
     game_dir = %state.game_dir.display(),
     mods = state.mods.len()
 ))]
-pub(crate) async fn deploy_mods(state: State) -> Result<()> {
+pub(crate) async fn deploy_mods(state: ActionState) -> Result<()> {
     let state = Arc::new(state);
 
     {
@@ -643,7 +643,7 @@ pub(crate) async fn deploy_mods(state: State) -> Result<()> {
 }
 
 #[tracing::instrument(skip(state))]
-pub(crate) async fn reset_mod_deployment(state: State) -> Result<()> {
+pub(crate) async fn reset_mod_deployment(state: ActionState) -> Result<()> {
     let boot_bundle_path = format!("{:016x}", Murmur64::hash(BOOT_BUNDLE_NAME.as_bytes()));
     let paths = [BUNDLE_DATABASE_NAME, &boot_bundle_path, SETTINGS_FILE_PATH];
     let bundle_dir = state.game_dir.join("bundle");
diff --git a/crates/dtmm/src/controller/worker.rs b/crates/dtmm/src/controller/worker.rs
index 49785b4..294af0e 100644
--- a/crates/dtmm/src/controller/worker.rs
+++ b/crates/dtmm/src/controller/worker.rs
@@ -1,5 +1,8 @@
 use std::sync::Arc;
 
+use color_eyre::eyre::Context;
+use color_eyre::Help;
+use color_eyre::Report;
 use color_eyre::Result;
 use druid::{ExtEventSink, SingleUse, Target};
 use tokio::runtime::Runtime;
@@ -10,11 +13,19 @@ use crate::controller::app::*;
 use crate::controller::game::*;
 use crate::state::AsyncAction;
 use crate::state::ACTION_FINISH_SAVE_SETTINGS;
+use crate::state::ACTION_SHOW_ERROR_DIALOG;
 use crate::state::{
     ACTION_FINISH_ADD_MOD, ACTION_FINISH_DELETE_SELECTED_MOD, ACTION_FINISH_DEPLOY,
     ACTION_FINISH_RESET_DEPLOYMENT, ACTION_LOG,
 };
 
+async fn send_error(sink: Arc<RwLock<ExtEventSink>>, err: Report) {
+    sink.write()
+        .await
+        .submit_command(ACTION_SHOW_ERROR_DIALOG, SingleUse::new(err), Target::Auto)
+        .expect("failed to send command");
+}
+
 async fn handle_action(
     event_sink: Arc<RwLock<ExtEventSink>>,
     action_queue: Arc<RwLock<UnboundedReceiver<AsyncAction>>>,
@@ -23,8 +34,9 @@ async fn handle_action(
         let event_sink = event_sink.clone();
         match action {
             AsyncAction::DeployMods(state) => tokio::spawn(async move {
-                if let Err(err) = deploy_mods(state).await {
-                    tracing::error!("Failed to deploy mods: {:?}", err);
+                if let Err(err) = deploy_mods(state).await.wrap_err("failed to deploy mods") {
+                    tracing::error!("{:?}", err);
+                    send_error(event_sink.clone(), err).await;
                 }
 
                 event_sink
@@ -33,8 +45,11 @@ async fn handle_action(
                     .submit_command(ACTION_FINISH_DEPLOY, (), Target::Auto)
                     .expect("failed to send command");
             }),
-            AsyncAction::AddMod((state, info)) => tokio::spawn(async move {
-                match import_mod(state, info).await {
+            AsyncAction::AddMod(state, info) => tokio::spawn(async move {
+                match import_mod(state, info)
+                    .await
+                    .wrap_err("failed to import mod")
+                {
                     Ok(mod_info) => {
                         event_sink
                             .write()
@@ -47,18 +62,22 @@ async fn handle_action(
                             .expect("failed to send command");
                     }
                     Err(err) => {
-                        tracing::error!("Failed to import mod: {:?}", err);
+                        tracing::error!("{:?}", err);
+                        send_error(event_sink.clone(), err).await;
                     }
                 }
             }),
-            AsyncAction::DeleteMod((state, info)) => tokio::spawn(async move {
-                if let Err(err) = delete_mod(state, &info).await {
-                    tracing::error!(
-                        "Failed to delete mod files. \
-                                You might want to clean up the data directory manually. \
-                                Reason: {:?}",
-                        err
-                    );
+            AsyncAction::DeleteMod(state, info) => tokio::spawn(async move {
+                let mod_dir = state.mod_dir.join(&info.id);
+                if let Err(err) = delete_mod(state, &info)
+                    .await
+                    .wrap_err("failed to delete mod files")
+                    .with_suggestion(|| {
+                        format!("Clean the folder '{}' manually", mod_dir.display())
+                    })
+                {
+                    tracing::error!("{:?}", err);
+                    send_error(event_sink.clone(), err).await;
                 }
 
                 event_sink
@@ -72,8 +91,12 @@ async fn handle_action(
                     .expect("failed to send command");
             }),
             AsyncAction::ResetDeployment(state) => tokio::spawn(async move {
-                if let Err(err) = reset_mod_deployment(state).await {
-                    tracing::error!("Failed to reset mod deployment: {:?}", err);
+                if let Err(err) = reset_mod_deployment(state)
+                    .await
+                    .wrap_err("failed to reset mod deployment")
+                {
+                    tracing::error!("{:?}", err);
+                    send_error(event_sink.clone(), err).await;
                 }
 
                 event_sink
@@ -83,8 +106,12 @@ async fn handle_action(
                     .expect("failed to send command");
             }),
             AsyncAction::SaveSettings(state) => tokio::spawn(async move {
-                if let Err(err) = save_settings(state).await {
-                    tracing::error!("Failed to save settings: {:?}", err);
+                if let Err(err) = save_settings(state)
+                    .await
+                    .wrap_err("failed to save settings")
+                {
+                    tracing::error!("{:?}", err);
+                    send_error(event_sink.clone(), err).await;
                 }
 
                 event_sink
diff --git a/crates/dtmm/src/state/data.rs b/crates/dtmm/src/state/data.rs
index 65156a3..8021840 100644
--- a/crates/dtmm/src/state/data.rs
+++ b/crates/dtmm/src/state/data.rs
@@ -1,6 +1,9 @@
 use std::{path::PathBuf, sync::Arc};
 
-use druid::{im::Vector, Data, Lens};
+use druid::{
+    im::{HashMap, Vector},
+    Data, Lens, WindowHandle, WindowId,
+};
 use dtmt_shared::ModConfig;
 
 use super::SelectedModLens;
@@ -86,6 +89,9 @@ pub(crate) struct State {
     pub config_path: Arc<PathBuf>,
     #[lens(ignore)]
     #[data(ignore)]
+    pub windows: HashMap<WindowId, WindowHandle>,
+    #[lens(ignore)]
+    #[data(ignore)]
     pub ctx: Arc<sdk::Context>,
 }
 
@@ -110,6 +116,7 @@ impl State {
             game_dir: Arc::new(game_dir),
             data_dir: Arc::new(data_dir),
             log: Arc::new(String::new()),
+            windows: HashMap::new(),
         }
     }
 
diff --git a/crates/dtmm/src/state/delegate.rs b/crates/dtmm/src/state/delegate.rs
index 6b05b96..506cbf8 100644
--- a/crates/dtmm/src/state/delegate.rs
+++ b/crates/dtmm/src/state/delegate.rs
@@ -1,10 +1,14 @@
-use std::sync::Arc;
+use std::{path::PathBuf, sync::Arc};
 
+use color_eyre::Report;
 use druid::{
-    AppDelegate, Command, DelegateCtx, Env, FileInfo, Handled, Selector, SingleUse, Target,
+    im::Vector, AppDelegate, Command, DelegateCtx, Env, FileInfo, Handled, Selector, SingleUse,
+    Target, WindowHandle, WindowId,
 };
 use tokio::sync::mpsc::UnboundedSender;
 
+use crate::ui::window;
+
 use super::{ModInfo, State};
 
 pub(crate) const ACTION_SELECT_MOD: Selector<usize> = Selector::new("dtmm.action.select-mod");
@@ -37,12 +41,42 @@ pub(crate) const ACTION_FINISH_SAVE_SETTINGS: Selector =
 
 pub(crate) const ACTION_SET_DIRTY: Selector = Selector::new("dtmm.action.set-dirty");
 
+pub(crate) const ACTION_SHOW_ERROR_DIALOG: Selector<SingleUse<Report>> =
+    Selector::new("dtmm.action.show-error-dialog");
+
+pub(crate) const ACTION_SET_WINDOW_HANDLE: Selector<SingleUse<(WindowId, WindowHandle)>> =
+    Selector::new("dtmm.action.set-window-handle");
+
+// A sub-selection of `State`'s fields that are required in `AsyncAction`s and that are
+// `Send + Sync`
+pub(crate) struct ActionState {
+    pub mods: Vector<Arc<ModInfo>>,
+    pub game_dir: Arc<PathBuf>,
+    pub data_dir: Arc<PathBuf>,
+    pub mod_dir: Arc<PathBuf>,
+    pub config_path: Arc<PathBuf>,
+    pub ctx: Arc<sdk::Context>,
+}
+
+impl From<State> for ActionState {
+    fn from(state: State) -> Self {
+        Self {
+            mods: state.mods,
+            game_dir: state.game_dir,
+            mod_dir: Arc::new(state.data_dir.join("mods")),
+            data_dir: state.data_dir,
+            config_path: state.config_path,
+            ctx: state.ctx,
+        }
+    }
+}
+
 pub(crate) enum AsyncAction {
-    DeployMods(State),
-    ResetDeployment(State),
-    AddMod((State, FileInfo)),
-    DeleteMod((State, Arc<ModInfo>)),
-    SaveSettings(State),
+    DeployMods(ActionState),
+    ResetDeployment(ActionState),
+    AddMod(ActionState, FileInfo),
+    DeleteMod(ActionState, Arc<ModInfo>),
+    SaveSettings(ActionState),
 }
 
 pub(crate) struct Delegate {
@@ -73,7 +107,7 @@ impl AppDelegate<State> for Delegate {
             cmd if cmd.is(ACTION_START_DEPLOY) => {
                 if self
                     .sender
-                    .send(AsyncAction::DeployMods(state.clone()))
+                    .send(AsyncAction::DeployMods(state.clone().into()))
                     .is_ok()
                 {
                     state.is_deployment_in_progress = true;
@@ -91,7 +125,7 @@ impl AppDelegate<State> for Delegate {
             cmd if cmd.is(ACTION_START_RESET_DEPLOYMENT) => {
                 if self
                     .sender
-                    .send(AsyncAction::ResetDeployment(state.clone()))
+                    .send(AsyncAction::ResetDeployment(state.clone().into()))
                     .is_ok()
                 {
                     state.is_reset_in_progress = true;
@@ -147,11 +181,12 @@ impl AppDelegate<State> for Delegate {
             cmd if cmd.is(ACTION_START_DELETE_SELECTED_MOD) => {
                 let info = cmd
                     .get(ACTION_START_DELETE_SELECTED_MOD)
-                    .and_then(|info| info.take())
+                    .and_then(SingleUse::take)
                     .expect("command type matched but didn't contain the expected value");
+
                 if self
                     .sender
-                    .send(AsyncAction::DeleteMod((state.clone(), info)))
+                    .send(AsyncAction::DeleteMod(state.clone().into(), info))
                     .is_err()
                 {
                     tracing::error!("Failed to queue action to deploy mods");
@@ -162,8 +197,9 @@ impl AppDelegate<State> for Delegate {
             cmd if cmd.is(ACTION_FINISH_DELETE_SELECTED_MOD) => {
                 let info = cmd
                     .get(ACTION_FINISH_DELETE_SELECTED_MOD)
-                    .and_then(|info| info.take())
+                    .and_then(SingleUse::take)
                     .expect("command type matched but didn't contain the expected value");
+
                 let found = state.mods.iter().enumerate().find(|(_, i)| i.id == info.id);
                 let Some((index, _)) = found else {
                     return Handled::No;
@@ -177,9 +213,10 @@ impl AppDelegate<State> for Delegate {
                 let info = cmd
                     .get(ACTION_ADD_MOD)
                     .expect("command type matched but didn't contain the expected value");
+
                 if self
                     .sender
-                    .send(AsyncAction::AddMod((state.clone(), info.clone())))
+                    .send(AsyncAction::AddMod(state.clone().into(), info.clone()))
                     .is_err()
                 {
                     tracing::error!("Failed to queue action to add mod");
@@ -190,9 +227,11 @@ impl AppDelegate<State> for Delegate {
                 let info = cmd
                     .get(ACTION_FINISH_ADD_MOD)
                     .expect("command type matched but didn't contain the expected value");
+
                 if let Some(info) = info.take() {
                     state.add_mod(info);
                 }
+
                 Handled::Yes
             }
             cmd if cmd.is(ACTION_LOG) => {
@@ -209,7 +248,7 @@ impl AppDelegate<State> for Delegate {
                     state.is_next_save_pending = true;
                 } else if self
                     .sender
-                    .send(AsyncAction::SaveSettings(state.clone()))
+                    .send(AsyncAction::SaveSettings(state.clone().into()))
                     .is_ok()
                 {
                     state.is_save_in_progress = true;
@@ -233,6 +272,31 @@ impl AppDelegate<State> for Delegate {
                 state.dirty = true;
                 Handled::Yes
             }
+            cmd if cmd.is(ACTION_SHOW_ERROR_DIALOG) => {
+                let err = cmd
+                    .get(ACTION_SHOW_ERROR_DIALOG)
+                    .and_then(SingleUse::take)
+                    .expect("command type matched but didn't contain the expected value");
+
+                let window = state
+                    .windows
+                    .get(&window::main::WINDOW_ID)
+                    .expect("root window does not exist");
+
+                let dialog = window::dialog::error::<State>(err, window.clone());
+                ctx.new_window(dialog);
+
+                Handled::Yes
+            }
+            cmd if cmd.is(ACTION_SET_WINDOW_HANDLE) => {
+                let (id, handle) = cmd
+                    .get(ACTION_SET_WINDOW_HANDLE)
+                    .and_then(SingleUse::take)
+                    .expect("command type matched but didn't contain the expected value");
+
+                state.windows.insert(id, handle);
+                Handled::Yes
+            }
             cmd => {
                 if cfg!(debug_assertions) {
                     tracing::warn!("Unknown command: {:?}", cmd);
@@ -241,4 +305,19 @@ impl AppDelegate<State> for Delegate {
             }
         }
     }
+
+    fn window_added(
+        &mut self,
+        id: WindowId,
+        handle: WindowHandle,
+        data: &mut State,
+        _: &Env,
+        _: &mut DelegateCtx,
+    ) {
+        data.windows.insert(id, handle);
+    }
+
+    fn window_removed(&mut self, id: WindowId, data: &mut State, _: &Env, _: &mut DelegateCtx) {
+        data.windows.remove(&id);
+    }
 }
diff --git a/crates/dtmm/src/ui/mod.rs b/crates/dtmm/src/ui/mod.rs
index cf8554f..12f66c9 100644
--- a/crates/dtmm/src/ui/mod.rs
+++ b/crates/dtmm/src/ui/mod.rs
@@ -1,5 +1,6 @@
 pub mod theme;
 pub mod widget;
 pub mod window {
+    pub mod dialog;
     pub mod main;
 }
diff --git a/crates/dtmm/src/ui/window/dialog.rs b/crates/dtmm/src/ui/window/dialog.rs
new file mode 100644
index 0000000..3b6802a
--- /dev/null
+++ b/crates/dtmm/src/ui/window/dialog.rs
@@ -0,0 +1,36 @@
+use color_eyre::Report;
+use druid::widget::{Button, CrossAxisAlignment, Flex, Label, LineBreaking, MainAxisAlignment};
+use druid::{Data, WidgetExt, WindowDesc, WindowHandle, WindowLevel, WindowSizePolicy};
+
+const ERROR_DIALOG_SIZE: (f64, f64) = (750., 400.);
+
+pub fn error<T: Data>(err: Report, parent: WindowHandle) -> WindowDesc<T> {
+    let msg = format!("A critical error ocurred: {:?}", err);
+    let stripped =
+        strip_ansi_escapes::strip(msg.as_bytes()).expect("failed to strip ANSI in error");
+    let msg = String::from_utf8_lossy(&stripped);
+
+    let text = Label::new(msg.to_string()).with_line_break_mode(LineBreaking::WordWrap);
+
+    let button = Button::new("Ok")
+        .on_click(|ctx, _, _| {
+            ctx.window().close();
+        })
+        .align_right();
+
+    let widget = Flex::column()
+        .main_axis_alignment(MainAxisAlignment::SpaceBetween)
+        .cross_axis_alignment(CrossAxisAlignment::End)
+        .with_child(text)
+        .with_spacer(20.)
+        .with_child(button)
+        .padding(10.);
+
+    WindowDesc::new(widget)
+        .title("Error")
+        .with_min_size(ERROR_DIALOG_SIZE)
+        .resizable(false)
+        .window_size_policy(WindowSizePolicy::Content)
+        .set_always_on_top(true)
+        .set_level(WindowLevel::Modal(parent))
+}
diff --git a/crates/dtmm/src/ui/window/main.rs b/crates/dtmm/src/ui/window/main.rs
index d500610..f48b5c3 100644
--- a/crates/dtmm/src/ui/window/main.rs
+++ b/crates/dtmm/src/ui/window/main.rs
@@ -1,25 +1,30 @@
 use std::sync::Arc;
 
 use druid::im::Vector;
-use druid::lens;
 use druid::widget::{
     Button, Checkbox, CrossAxisAlignment, Flex, Label, LineBreaking, List, MainAxisAlignment,
     Maybe, Scroll, SizedBox, Split, TextBox, ViewSwitcher,
 };
+use druid::{lens, LifeCycleCtx};
 use druid::{
     Color, FileDialogOptions, FileSpec, FontDescriptor, FontFamily, Key, LensExt, SingleUse,
-    TextAlignment, Widget, WidgetExt, WindowDesc,
+    TextAlignment, Widget, WidgetExt, WindowDesc, WindowId,
 };
+use lazy_static::lazy_static;
 
 use crate::state::{
     ModInfo, State, View, ACTION_ADD_MOD, ACTION_SELECTED_MOD_DOWN, ACTION_SELECTED_MOD_UP,
-    ACTION_SELECT_MOD, ACTION_START_DELETE_SELECTED_MOD, ACTION_START_DEPLOY,
-    ACTION_START_RESET_DEPLOYMENT,
+    ACTION_SELECT_MOD, ACTION_SET_WINDOW_HANDLE, ACTION_START_DELETE_SELECTED_MOD,
+    ACTION_START_DEPLOY, ACTION_START_RESET_DEPLOYMENT,
 };
 use crate::ui::theme;
 use crate::ui::widget::controller::{AutoScrollController, DirtyStateController};
 use crate::ui::widget::PathBufFormatter;
 
+lazy_static! {
+    pub static ref WINDOW_ID: WindowId = WindowId::next();
+}
+
 const TITLE: &str = "Darktide Mod Manager";
 const WINDOW_SIZE: (f64, f64) = (1080., 720.);
 const MOD_DETAILS_MIN_WIDTH: f64 = 325.;
@@ -324,4 +329,9 @@ fn build_window() -> impl Widget<State> {
         .with_flex_child(build_main(), 1.0)
         .with_child(build_log_view())
         .controller(DirtyStateController)
+        .on_added(|_, ctx: &mut LifeCycleCtx, _, _| {
+            ctx.submit_command(
+                ACTION_SET_WINDOW_HANDLE.with(SingleUse::new((*WINDOW_ID, ctx.window().clone()))),
+            );
+        })
 }
diff --git a/crates/dtmm/src/util/config.rs b/crates/dtmm/src/util/config.rs
index 2c942ea..41fef73 100644
--- a/crates/dtmm/src/util/config.rs
+++ b/crates/dtmm/src/util/config.rs
@@ -7,7 +7,7 @@ use clap::{parser::ValueSource, ArgMatches};
 use color_eyre::{eyre::Context, Result};
 use serde::{Deserialize, Serialize};
 
-use crate::state::{ModInfo, State};
+use crate::state::{ActionState, ModInfo};
 
 #[derive(Clone, Debug, Serialize)]
 pub(crate) struct LoadOrderEntrySerialize<'a> {
@@ -31,8 +31,8 @@ pub(crate) struct ConfigSerialize<'a> {
     mod_order: Vec<LoadOrderEntrySerialize<'a>>,
 }
 
-impl<'a> From<&'a State> for ConfigSerialize<'a> {
-    fn from(state: &'a State) -> Self {
+impl<'a> From<&'a ActionState> for ConfigSerialize<'a> {
+    fn from(state: &'a ActionState) -> Self {
         Self {
             game_dir: &state.game_dir,
             data_dir: &state.data_dir,