Checking UnitArtStyle errors before v35 is crucial if we want avert fatal bug like in v34.
Anyway tnx Alberts for finding these bugs.
Exactly v34 had a few missing UnitArtStyles that was the reason i added code to check them while loading. But some people had problems with that error checking and the assert in case of a missing ArtInfo. Now you can't really find those errors until the game crashes.