Heya, thanks for the reply! By total coincidence I actually JUST figured out what was causing it about 15 mins ago – after more than three weeks of constant crashes and having to repeatedly reconstruct broken builds to try and avoid rolling back days of work.
It was my UI. I’m still not entirely sure what exactly the problem was, but it seems to be related to having too many assets/blueprints/UI elements all referencing each other throughout my project.
If, for example, I create a new BP and add a cast to my FirstPersonCharacter BP and then save that reference as a variable, and then try to migrate that brand new BP to another project, it will require nearly 90% of my project’s 6,000 files to be migrated along with it. It’s crazy.
Anyway, I guess my HUD UI just had too many references going out from it that linkerload hit some kind of limit when trying to either open the editor or package a build causing it to crash.
I just spent a couple hours deleting and rewriting some older UI elements and now finally everything is working.
I must say though, by far the most frustrating part has been that none of the many crash logs generated listed even one single file coming from my project, so it’s been just trial and error trying to find the cause.