PLEASE make this a good resource and do not add to this section without permission from TVRdesigns, QBuilderz or armiel at MTS.info. Bad mapping, bad meshes, glitches that happen when ingame, shiny objects. For custom objects the reasons are perhaps more obvious. For terrain paints this might be because they glow, repeat, react wierdly to ingame lighting, or any other sort of reasons like those.
1.3 Step 2a: Create 'Normal' Packages Folder.
