Sadly the error is back with no clear sign as to why its happening. The last thing I did was move a few blue prints around, and replace some old character BP with a new one using the replace and delete feature. Fixing up redirecters also causes the same crash. Its affecting many different maps and I cant see a pattern involved.
I opend the project in 4.14.2 and it did fix the problem. However we are currently running a custom built version of UE4 that has xbox one support built in along with a custom lighting model. We’ve settled into 4.13.2 and it would take many hours of work to upgrade right now. So, hopefully its possible to figure this out.