Dev.exe says following:

Assert @ D:\SinsRebellion\main\CodeSource\Engine/String/StringLibrary.cpp(80)

s2 != NULL

Error is related to an ability i wrote. The error appears AFTER I build the ship with the skill and only AFTER i open the skill screen. Error occurs before I can apply ability points

What seems strange to me, is that I have nothing on drive D relating to sins. Drive D is exclusively used for movies, pictures and documents. Games are on drive A and the modded files are on drive C.

I have no idea what the assert means and have no clue what the S2!=NULL means

can anyone help me