For some prior context, my issue is similar to thread #1 - Character BP broken after upgraded to 4.4 and thread #2 - Error Failed import: SkeletalMeshComponent in the Answers hub where many have discussed the corruption of their character blueprints.
The symptoms of the issue are twofold: either the editor simply crashes on startup (because of the corrupt character BP) or it loads with Error Failed import: SkeletalMeshComponent/ArrowComponent/CharacterMovementComponent which causes the skeletal mesh to disappear on the character BP.
I managed to dig up a much older version from backup that at least loads, but each time I try to move forward and add new features the blueprint inevitably gets corrupt, so there’s no way out. This is when I took a closer look at the components screen and realized that even my older versions were in fact corrupt! Below is a screenshot from an older version of my character blueprint where the details panel of the skeletalmesh/capsule/arrow are completely blanked out! This symptom is the beginning of the debacle, once the BP reaches this stage it inevitably spirals into a corrupt/crash-prone version
I’ve resigned to the fact that I need to build my 587 KB blueprint from scratch again but in the meantime I thought it would be good to see how many people are still seeing this. The general trend I’ve seen in my project is that as it grows larger it becomes more and more prone to crashes/corruption. According to the first thread I linked from Answers it seems Epic is no longer able to reproduce the issue in their internal build but AFAIK it is not clear what fixed it or which release the fix will be targeted for (correct me if I’m wrong on this)
Appreciate your help
PS: I’m currently using 4.4.3 (As for 4.5 I only have the preview version but I’m not able to even convert my project to 4.5 as conversion crashes/fails).