I got a new problem, after i load defrag, osp crashes when i load a level and attempt to play it.
I don't understand what you want to achieve. Both Defrag and OSP are mods, you either play one, or the other. So if you load Defrag, OSP should exit, and then you cannot load a level with OSP. Switching mods won't crash the game, I've tested with Defrag 1.92.01 and OSP 1.03a.