Changing the name of a GameMode Blueprint that is set as the Default in Project Settings and then clicking the Project Settings Default GameMode dropdown will crash the editor. No crash report is generated.
Log is attached.
Appears to be related to [Link Removed]
Reproduced only in 4.8.1 and 4.8.2 hotfix. Already fixed in Main (//depot/UE4/Promoted-CL-2605171)
1. Open a new First Person Blueprint template project
2. Change the name of the FirstPersonGameMode Blueprint
3. Project Settings > Maps & Modes
4. Click the dropdown for the Default GameMode
Result:
Crash, no crash reporter
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-18289 in the post.