Animation Problem.

I have a character that i rigged in 3ds max with a biped. And i added some animations and they all worked fine in 3ds max. But when i bring it all into Unreal everything messes up. In 1 case i have a wave animation. And when it plays in unreal you get my characters arms flopping all over the place. The same thing happens with my other animations also. Can someone tell me how to fix this?. Also I saw a option on the bottom right of the screen. (morph target preview) or something like that that was set to 0 and would fix it when i set it to 1. But it did not same that value and after reimporting to try and fix it i dont see the option anymore. Can someone tell me how i can make my animations work?

It can be caused by many things so it’s hard to say what the problem can be really. If you upload your Max file and find a volunteer to check it out you may get an answer.

i’ve found in the past that this is normally a skinning/weighting problem, in persona(editor) if you switch on view bones then you’ll most likely see the bones moving correctly but not the skin, in this case go back into max and double check that the vertices are really weighted to the correct bones

Thanks guys i got it fixed. I found out when i was exporting the animation i was also exporting the mesh. So i fixed it by just exporting the skeleton.