The licensee has been using a custom CVAR to launch directly into PIE for a world partition level. Since updating to 5.4, this now causes an editor crash.
The main factor appears to be whether or not a data layer exists in the level, as it only crashes when one is added.
1. Open the example project "PIELaunchBugExample" attached to the case. (see addl info URL)
2. Launch the project from the solution.
3. When it loads into the blank default map, enter the command "ExampleGame.LaunchPIE" into the console to launch into the world partition level.
4. Observe the crash. If debugging, it should hit the exception.
5. Open the project again, manually open the ExampleMap_WP level.
6. Delete the data layer in that level.
7. Repeat steps 1 to 3, and observe that it no longer crashes.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-232393 in the post.
| 1 |
| Component | UE - World Creation - Worldbuilding Tools - Data Layers |
|---|---|
| Affects Versions | 5.4 |
| Target Fix | 5.6 |
| Created | Dec 6, 2024 |
|---|---|
| Updated | Dec 17, 2024 |