Editor Crashes when clicking GameMode or GameInstance in Map&Modes Section in Project Settings

editor crashed after clicking drop downs for GameMode or GameInstance in Maps&Modes Section in Project Settings windows. After clicking dropdown it says Rebuilding Class Hierarchy 100% then crashes. This happened after a MAJOR moving of assets including GameModes and Instances.

On 4.8.2 aftet bug fix UE-17673

Hey BlackSKY,

I wasn’t able to reproduce this in a new 4.8.2 project. Which project template was this? Does this happen consistently with this project? Can you reproduce it in a new project?

So we can confirm whether it’s same or similar crash as one reported in UE-17673, please copy information in Crash Reporter window that appears after crash (if you get one). Please also and attach log from project, which should be in project’s Saved\Logs folder. Thanks!

TEPLATE: Fps but I also imported TP Example Assets.

My backup before I moved all assets around works fine, but after moving assets, its constant, tried 4 times same result. Also game Plays Fine. Also on editor load i do get some reference errors (expected) but nothing that relates to instances or gamemode. Ill Package logs when i get back home. Also no Crash Reporter Windows opens, just “UnrealEngine has stopped working”. Also it doesnt hang or lag machine it just stops. I feel this may be a reference issue so recreating could be hard with out actual project files, i can probably fix it by reverting project to my backup and be more careful with my moving of assets, but I will try to replicate this issue when i get home, hopefully i can help fix this.

Was having this problem myself after moving assets around in project hierarchy. What fixed it was finding “DefaultEngine.ini” in my VS solution, and changing the “GlobalDefaultGameMode” address there to new location of my gamemode BP.

Hope that helps.

Hi BlackSKY,

It does appear this is a similar crash to one we fixed in UE-17673, though hotfix implemented in 4.8.2 didn’t catch all instances. This is fixed in our internal release branch, however, so it will no longer occur in next major release (probably 4.9).

It looks like this only happens after moving GameMode or GameInstance to a new folder location, so avoiding that is best option when possible. If not, open DefaultEngine.ini file for project (in project’s Config folder) and search for GlobalDefaultGameMode. Change folder location to None. Now you should be able to change it to correct location in editor (Project Settings > Maps & Modes).

Hope that helps! Thanks for report.