Hey Acrossfy,
I am still unable to reproduce the crash you are reporting. I have attempted to open multiple different blueprints in various sample projects we have on the marketplace, but with no success. Are you using the binary version (from launcher) or are you using source (GitHub) to run the engine?
Would you mind finding a single project that you can get this crash to reproduce and let me know which project it is you are testing. If you manage to reproduce the crash, would you type the tittle of this post into the comment box within the crash reporter tool so I can track down the crash?
Thank you,