Hi I originally had AI characters moving around using a behaviour tree and a AI controller in 4.7 Preview 7 and everything was working fine, I updated to Preview 8 and every time I try to load my project It crashes with this error.
Assertion failed: BlueprintObj->GeneratedClass [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.7\Engine\Source\Editor\UnrealEd\Private\Kismet2\Kismet2.cpp] [Line: 861]
Invalid generated class for AI_Controller
I deleted the ‘AI_Controller’ that it was having problems with and the project loaded fine, but now my AI don’t move. I created a brand new controller and set up the AI again to work which they did but if I save the project with the new controller and try to open it again I get the same error but with the new controller I just made.
I noticed that when I had the project open with the new AI controller I’d made that if I go to the folder and try and open the same project that’s open I get the error with the controller even though the project is open and working fine but if I close the project it I wont be able to open it again.
I’ve found out how to recreate the bug on my project:
Create new blue print use the aiController class and I put the following blueprint into it
and in the Character that I want to move I put the controller into the ‘AI Controller Class’
After doing that when I save and try to reopen the project it crashes everytime unless I delete the ai controller blueprint.