Linux: Fixed crash when trying to start another instance (fixes file associations)

GUI.NET/ResourceManager.cs

@@ -14,8 +14,16 @@ namespace Mesen.GUI
 	{
 		private static void ExtractFile(ZipArchiveEntry entry, string outputFilename)
 		{
+			if(File.Exists(outputFilename)) {
+				try {
+					File.Delete(outputFilename);
+				} catch { }
+			}
 			try {
-				entry.ExtractToFile(outputFilename, true);
+				//On Mono, using overwrite = true for ExtractToFile crashes/kills any currently running instance that uses the file.
+				//This is probably a Mono bug?
+				//Better to attempt a delete & then extract, like now (and like it used to be) 
+				entry.ExtractToFile(outputFilename);
 			} catch { }
 		}
 

GUI.NET/SingleInstance.cs

@@ -36,6 +36,11 @@ namespace Mesen.GUI
 				} catch {
 					_firstInstance = false;
 				}
+				try {
+					if(File.Exists("mesen.arguments")) {
+						File.Delete("mesen.arguments");
+					}
+				} catch { }
 			} else {
 				this._identifier = new Guid("{A46606B7-2D1C-4CC5-A52F-43BCAF094AED}");
 				this._mutex = new Mutex(true, _identifier.ToString(), out _firstInstance);