Hi Ian
I know this is an old post but I have recently tried updating my game to 5.5 and still have the same issue. If I try to open any type of blueprint the game crashes. You mentioned that in your project it was a struct causing the issue, Do you happen to recall how you identified the offending item?
I’m pretty sure I have a similar issue but I have no idea how to find what is causing it.
Many thanks in advance
Nick