I've found out there is problem with some overloaded function in one of shader files. I've renamed it in its definition and also in places where it was called and that error message disappeared.
Now i'ld like to know if it possible to load mesh, that is imported from blender in .obj format with textures? I have trouble to set my textures when there is already cut off shader in material override. I did not find place where i could load theese textures.