[4.5] Using loading screen crashes game on exit

I’ve produced repro steps for the above;

1 - Create a blank C++ project

2 - Add a custom game instance, with a ‘BeginLoadingScreen’ style function, blueprint callable, with the following body;

FLoadingScreenAttributes LoadingScreen;
LoadingScreen.bAutoCompleteWhenLoadingCompletes = true;

// using the built-in 'test' loading screen to reduce points of failure
LoadingScreen.WidgetLoadingScreen = FLoadingScreenAttributes::NewTestLoadingScreenWidget();


3 - Create a custom player controller in blueprints, and call the above function from it on keypress (i.e. on press of ‘B’ key, for beginning/setting-up the loading screen). Add an ‘Exit Game’ node on another keypress (i.e. on ‘Q’).

5 - Set the project to use the custom controller and game instance (to use the controller, make a custom BP gamemode and set the controller property to the custom controller made above).

5 - Package the game (I was using 64-bit development).

6 - Run the packaged game, and then press the key selected above to setup the loading screen, followed by ‘open NAME_OF_MAP’. Observe the loading screen (note: a loading screen that kicks in at the end of the loading sequence is pretty terrible. Not sure if that’s my doing).

7 - After the map has opened, press the ‘quit’ button defined above.

8 - Observe the application crashing on exit.

Repro project available here.


Hi ,

I spent some time working on this today, and I was able to reproduce the issue until I packaged the game using the DebugGame configuration in the Editor. When I ran the game this way, there was no crash on exit, and when I went back to package in the Development configuration, it no longer crashed on exit. Would you be able to give that a try and see if you get the same results?

The only indication of a crash that I received was a notification from Windows indicating that the game had stopped. Did you ever receive a callstack or indication in the game Log that a crash had occurred?

Hey -

We just wanted to check with you to see if you are still experincing this crash? If so, does it still occur in the latest version of the engine (4.6)?


Hi ,

We have not heard back from you in a few days, so we are marking this post as Resolved for tracking purposes. If you are still experiencing the issue you reported, please respond to this message with additional information and we will offer further assistance.

Thank you.