diff --git a/.cargo/config.toml b/.cargo/config.toml
index 876a223e7..1138309ea 100644
--- a/.cargo/config.toml
+++ b/.cargo/config.toml
@@ -29,3 +29,7 @@ rustflags = [
 rustflags = [
     "-Clink-arg=/STACK:16777216",
 ]
+
+[env]
+RUST_MIN_STACK = "8388608"
+
diff --git a/src/app/automation.rs b/src/app/automation.rs
index a7b70c195..bf469d9a0 100644
--- a/src/app/automation.rs
+++ b/src/app/automation.rs
@@ -1656,67 +1656,74 @@ mod tests {
 
     #[test]
     fn test_pline_line_then_arc() {
-        use crate::app::Message;
-        let mut app = OpenCADStudio::new_for_test();
-        app.automation_op(r#"{"op":"new"}"#);
-        {
-            app.tabs[0].scene.selection.borrow_mut().vp_size = (1920.0, 1080.0);
-            app.tabs[0].scene.sync_tiles_from_panes(1920.0, 1080.0);
-        }
+        std::thread::Builder::new()
+            .stack_size(8 * 1024 * 1024)
+            .spawn(|| {
+                use crate::app::Message;
+                let mut app = OpenCADStudio::new_for_test();
+                app.automation_op(r#"{"op":"new"}"#);
+                {
+                    app.tabs[0].scene.selection.borrow_mut().vp_size = (1920.0, 1080.0);
+                    app.tabs[0].scene.sync_tiles_from_panes(1920.0, 1080.0);
+                }
 
-        // Start PLINE
-        let _ = app.update(Message::CommandInput("PLINE".to_string()));
-        let _ = app.update(Message::CommandSubmit);
+                // Start PLINE
+                let _ = app.update(Message::CommandInput("PLINE".to_string()));
+                let _ = app.update(Message::CommandSubmit);
 
-        // Click first point (100, 100)
-        let _ = app.update(Message::ViewportMove(iced::Point::new(100.0, 100.0)));
-        let _ = app.update(Message::ViewportLeftPress);
-        let _ = app.update(Message::ViewportLeftRelease);
+                // Click first point (100, 100)
+                let _ = app.update(Message::ViewportMove(iced::Point::new(100.0, 100.0)));
+                let _ = app.update(Message::ViewportLeftPress);
+                let _ = app.update(Message::ViewportLeftRelease);
 
-        // Move to (200, 100) and click second point (draw line)
-        let _ = app.update(Message::ViewportMove(iced::Point::new(200.0, 100.0)));
-        let _ = app.update(Message::ViewportLeftPress);
-        let _ = app.update(Message::ViewportLeftRelease);
+                // Move to (200, 100) and click second point (draw line)
+                let _ = app.update(Message::ViewportMove(iced::Point::new(200.0, 100.0)));
+                let _ = app.update(Message::ViewportLeftPress);
+                let _ = app.update(Message::ViewportLeftRelease);
 
-        let wid = app.main_window.unwrap_or_else(iced::window::Id::unique);
+                let wid = app.main_window.unwrap_or_else(iced::window::Id::unique);
 
-        // Switch to arc: Option 1 - CommandOptionPick("A")
-        let _ = app.update(Message::CommandOptionPick("A".to_string()));
-        let _ = app.view(wid);
-        println!(
-            "ENTITIES: {}",
-            app.tabs[0].scene.document.entities().count()
-        );
-        println!(
-            "CMD: {:?}",
-            app.tabs[0].active_cmd.as_ref().map(|c| c.name())
-        );
+                // Switch to arc: Option 1 - CommandOptionPick("A")
+                let _ = app.update(Message::CommandOptionPick("A".to_string()));
+                let _ = app.view(wid);
+                println!(
+                    "ENTITIES: {}",
+                    app.tabs[0].scene.document.entities().count()
+                );
+                println!(
+                    "CMD: {:?}",
+                    app.tabs[0].active_cmd.as_ref().map(|c| c.name())
+                );
 
-        // Move mouse!
-        let _ = app.update(Message::ViewportMove(iced::Point::new(200.0, 100.0)));
-        let _ = app.view(wid);
-        let _ = app.update(Message::ViewportMove(iced::Point::new(201.0, 100.0)));
-        let _ = app.view(wid);
-        let _ = app.update(Message::ViewportMove(iced::Point::new(200.0, 150.0)));
-        let _ = app.view(wid);
-        let _ = app.update(Message::ViewportMove(iced::Point::new(150.0, 150.0)));
-        let _ = app.view(wid);
+                // Move mouse!
+                let _ = app.update(Message::ViewportMove(iced::Point::new(200.0, 100.0)));
+                let _ = app.view(wid);
+                let _ = app.update(Message::ViewportMove(iced::Point::new(201.0, 100.0)));
+                let _ = app.view(wid);
+                let _ = app.update(Message::ViewportMove(iced::Point::new(200.0, 150.0)));
+                let _ = app.view(wid);
+                let _ = app.update(Message::ViewportMove(iced::Point::new(150.0, 150.0)));
+                let _ = app.view(wid);
 
-        // Click arc point
-        let _ = app.update(Message::ViewportLeftPress);
-        let _ = app.update(Message::ViewportLeftRelease);
+                // Click arc point
+                let _ = app.update(Message::ViewportLeftPress);
+                let _ = app.update(Message::ViewportLeftRelease);
 
-        // Move mouse again
-        let _ = app.update(Message::ViewportMove(iced::Point::new(150.0, 160.0)));
+                // Move mouse again
+                let _ = app.update(Message::ViewportMove(iced::Point::new(150.0, 160.0)));
 
-        // Switch to line
-        let _ = app.update(Message::CommandOptionPick("L".to_string()));
+                // Switch to line
+                let _ = app.update(Message::CommandOptionPick("L".to_string()));
 
-        // Move mouse again
-        let _ = app.update(Message::ViewportMove(iced::Point::new(100.0, 150.0)));
+                // Move mouse again
+                let _ = app.update(Message::ViewportMove(iced::Point::new(100.0, 150.0)));
 
-        // Finish
-        let _ = app.update(Message::CommandOptionPick(String::new()));
+                // Finish
+                let _ = app.update(Message::CommandOptionPick(String::new()));
+            })
+            .unwrap()
+            .join()
+            .unwrap();
     }
 
     #[test]
diff --git a/src/app/update/page_setup_import.rs b/src/app/update/page_setup_import.rs
index 4894e6b95..943b5eb5b 100644
--- a/src/app/update/page_setup_import.rs
+++ b/src/app/update/page_setup_import.rs
@@ -260,7 +260,8 @@ mod tests {
             app.tabs[i].scene.page_setup_save("Site", ps.clone());
             ps.paper_size = "ISO_A2_(420.00_x_594.00_MM)".into();
             app.tabs[i].scene.page_setup_save("Overview", ps);
-            let save = format!(r#"{{"op":"save","path":"{}"}}"#, source.display());
+            let p = source.to_string_lossy().replace('\\', "/");
+            let save = format!(r#"{{"op":"save","path":"{p}"}}"#);
             let reply = app.automation_op(&save);
             assert_eq!(reply["ok"], true, "{reply}");
         }