Reversing a "Hollow"ed BSP results in Crash

I have consistently duplicated a bug where I take any ordinary piece of BSP (cube, sphere, or cylinder for example), set it to hollow, built geometry, then set it to unhollow, and rebuilt geometry. This will always result in the engine crashing.

Hey Liforce-

Which version of the engine are you in that this is happening? Does this crash occur in a new project with no added content? Any information you can include will help determine what the cause is.


I’m using 4.4.3, The crash occurs in a project with content, but in a brand new level with no other content except for the few pieces of BSP.

If you could post your crash logs and dump file from the crash we can use them to try and find the cause of the crash. The “Project Session Log” section of the following link will show you where in the project folder the logs are saved: A new, community-hosted Unreal Engine Wiki - Announcements - Epic Developer Community Forums.

Also, do you have the same crash occur if you are working in 4.5?

I don’t have version 4.5 at the moment.

Also, the Project Log is a very large file. I can’t copy and paste it or attach it without getting errors.

Ah. Here we go.

link text

Hey Liforce-

I have entered this crash in our internal tracking system () for further investigation.