I made a animated lift like Half Life 1. Animation, collision model and adding skin modifier to collition model is ok but after export when i check in game the model's collision model has been rotate 90 degree. I remade collision model many time. But nothing happen. How can I fix it this problem? (Note: I don't use WallWorm Hull Helper because when i made with Hull Helper after export engine has converted concave hull to convex.)
