tools use advanced graphics too (mesh editor, world editor) but they work,
so this must mean that the problem is during compiling custom projects.

have you tried running advanved tutorials in debug mode, line after line, and see where the error occurs?

Mam zaznaczać każdą linijkę po kolei i brać Run to cursor i zobaczyć gdzie będzie błąd?Sorry ze po polsku.

you can use option Debug\step into, step over
they execute code line by line

step into-enters functions, while step over doesn't

Esenthel look PW.