Assertion fail when building on 4.8

Whenever I try to build my game using 4.8 I get this error:

Assertion failed: PrecacheSize > 0 [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.8\Engine\Source\Runtime\CoreUObject\Private\UObject\LinkerLoad.cpp] [Line: 885]

I can’t figure out where the real problem is, as the logs show no other error. What does this error mean?

It turns out a lot of my blueprints where having issues due to components not existing in c++ anymore due to modifications i made to the core classes.

Hi, I have the same issue, but I didn’t made any modifications to the core classes :confused: