Hi,
Normally it works fine but once I depoly/packagage the game and try to launch it I get:
just a plain MessageBox with ok button:
Title: The has crashed and will close
Fatal error!
Address = 0x0 (filename not found)
and it’s just with this project
Thank you
I found the problem.
This error msg shows if you call a BlueprintImplementableEvent function in the constructor.
Why does this work in the editor?
Could you improve the error message? took me about 3 hours to figure this out.
Would you happen to have some more info about what exactly caused this problem and how you solved it? I just started getting this same exact issue and it’s kind of driving me up the wall 
If you are calling any blueprint functions from any object’s constructor, just comment them out and try again.
My problem was that I was calling my custom blueprint function (BlueprintImplementableEvent) from a object’s constructor, that caused the crash for me.