[BUG] adding funciont to blueprint interface makes engine crashs on startup

When I add some new function to interface connected to my character BP it forces to modify many files - it seams that nothing happen but after that engine start to crash when i try to start up a project.
I remember that such bug existed in previous version of the engine.

Hey Gomo,

I attempted to reproduce this in a clean project but I couldn’t get your results. It could have something to do how much you have tied to the interface so it may not reproduce in a simple project. Feel free to give it a try though, if we can get a test project that could help a lot.

Could you also provide the Callstack (including Epic ID/Machine ID) from the crash and the Logs?

Any other repro steps could be helpful as well.

Here is what I’ve got after crash.
I’ll try to make some blank debug project soon.

link text

link text

Unfortunately I couldn’t make blank project with repro - at least in short time. When I try to migrate it migrates almost all my Enemy BPs, assets AIs and so on, and recreating similar structure is impossible to do in reasonable time.

Unfortunately, without a way to reproduce the issue internally there isn’t much we can do. From the callstack it looks to be confined only to your project and is likely caused by various code changes from multiple engine upgrades. I’m assuming your project has been through multiple engine versions?

If you do find a way to reproduce this, please make sure to post back and we can continue investigating.

Thanks,

TJ

I was afraid you may say that.
My project was indeed created in some of first version of UE4.
I’ll post if I have any new information or reproduce this bug.