diff --git a/mRemoteV1/App/ProgramRoot.cs b/mRemoteV1/App/ProgramRoot.cs
index ecdbbea1a..6c73a1c8a 100644
--- a/mRemoteV1/App/ProgramRoot.cs
+++ b/mRemoteV1/App/ProgramRoot.cs
@@ -88,8 +88,11 @@ namespace mRemoteNG.App
             if (!FrmSplashScreen.getInstance().IsDisposed)
                 FrmSplashScreen.getInstance().Close();
 
+            if (FrmMain.Default.IsDisposed) return;
+            
             var window = new UnhandledExceptionWindow(e.Exception, false);
             window.ShowDialog(FrmMain.Default);
+            
         }
 
         private static void CurrentDomainOnUnhandledException(object sender, UnhandledExceptionEventArgs e)