I have several animation in separate .x file. They play good individual. But when I use MeshViewer to merge those .x file to a big file. It has something strange. When I change animation, next animation will influence by last animation. Here has some example: Download link: http://poseng.myweb.hinet.net/Animation.zip Wrong.x is included Wrong animation Stand.x is included Stand animation Merge.x is included both of above animation When change animation from Wrong to Stand, that has something strange. Best regards, Nick