fsds v 3.5 fsx keyframe animation don't show or compile

In my flight simulator design studio when i try and use animation it wont compile or show up in flight simulator x, and when i open up the fsx key frame animation dialog box no names show up. in other words animation just wont work. it worked with V 3.0 it all worked but in V 3.5 not even the sample animations will work. Please help me.

Thanks.

Luke.