So I’ve been having an unusual problem. I’ve been working on a project which I started in version 4.18 for a while now. However, trying to upgrade to 4.19 has caused the project to crash on start up. Thankfully, I have backups and I can still open the 4.18 version of the project and edit it with no problems. However, attempting to make a copy of it for 4.19 doesn’t work at all - it just crashes on startup. I’ve never had this problem with previous projects before, and I’m usually able to upgrade just fine.
I’ve verified the version, and I also did a test on porting clean projects from 4.18 to 4.19. No problems. I suspect it has something to do specifically with my project, but unfortunately, I don’t know how to reproduce the problem separately. Is there anything I can try to remedy this?
After updating to version 4.19.1, I was able to successfully convert my project over. I’m not sure if updating is what fixed it, but whatever the case, it seems to be working now.
I had the exact same problem. And when the update for 4.19.1 came along, it started up. However, none of my existing Widgets that I made in 4.18 works anymore. It just shows Runtime error : Accessed none trying to read MainMenuWidget. When i try to force add it to viewport i get a crash.
I am not sure about this, but my issue dissapeared after i delayed the add to viewport with 0.2 sec. It worked fine without the delay in 4.18, but not in 4.19. Maybe something to do with the order of operations.
I did have to change a few things about my own project too. I was getting errors after porting because apparently, the order in which some blueprints were getting executed somehow changed.