Fix non-macos StartApp filename and args

CHANGELOG.md

@@ -5,6 +5,10 @@ All notable changes to Stability Matrix will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning 2.0](https://semver.org/spec/v2.0.0.html).
 
+## v2.8.0-pre.2
+### Fixed
+- Fixed Auto-update failing to start new version on Windows and Linux when path contains spaces
+
 ## v2.8.0-pre.1
 ### Added
 - Added Package Extensions (Plugins) management - accessible from the Packages' 3-dot menu. Currently supports ComfyUI and A1111.

StabilityMatrix.Core/Processes/ProcessRunner.cs

@@ -34,20 +34,21 @@ public static class ProcessRunner
     /// </summary>
     public static Process StartApp(string path, ProcessArgs args)
     {
+        var startInfo = new ProcessStartInfo();
+
         if (Compat.IsMacOS)
         {
-            var startInfo = new ProcessStartInfo
+            startInfo.FileName = "open";
-            {
+            startInfo.Arguments = args.Prepend(path).ToString();
-                FileName = "open",
+            startInfo.UseShellExecute = true;
-                Arguments = args.Prepend([path, "--args"]),
+        }
-                UseShellExecute = true
+        else
-            };
+        {
-
+            startInfo.FileName = path;
-            return Process.Start(startInfo)
+            startInfo.Arguments = args;
-                ?? throw new NullReferenceException("Process.Start returned null");
         }
 
-        return Process.Start(args.Prepend(path));
+        return Process.Start(startInfo) ?? throw new NullReferenceException("Process.Start returned null");
     }
 
     /// <summary>