I too have a blueprint that will crash the editor if I hit Play, and I am also using Dedicated server with two players. (RepLayout.cpp – Line 2209 error in the log, like many posts I’ve seen)
It worked fine until late last night. Interestingly, if I open the project in editor, hit compile on the blueprint, and then Play…no crash. Obviously it will be annoying to have to compile the blueprint every time I open my project. I’ve tried all the things in the thread above, deleting folders, etc.
If I remove the replication from the variables, I can load the project directly and play with no crash. It’s only when the actor is set to Replicate AND there are variable that are set to Replicate.
What’s really confusing is that everything works great if I press compile first, so it appears that something isn’t being “linked up” or saved properly after the compile which causes the crash to reoccur if I open the project again. It really seems to be some kind of code communication problem.
The only real option left for me is to rebuild the blueprint. I really don’t want to do this because I’ve got about a billion pins connected in other blueprints and if I change the variable type it’s going to cause a lot of rework. If I have to, I have to, but it’d be really nice to figure out how to fix this blueprint so as to not cause a crash when it tries to replicate.
Edit: To add, this project was started as of version 4.11, so no project conversions have taken place.