Hey there, Im not sure if the is related to the conversion to Unreal Engine 4.6, but I always get an error message when I open the Car AI project and try to hit play: It tells me about an error in a blueprint, I went there, clicked compile, and the error is fixed and the game runs again. I try to save, close project, restart, but the error happens again and again!
It looks like
Hovering the error, show error:
Other node shows at hover!
Again: Clicking compile at the top fixes the error temporarely until you open the project the next time again!