Also see that you do not have any double marks.
Sometimes it happens that by mistake 2 key frames are 1 fame from each other
and last one it the one you want to be dynamic with not the first of two.
It may not be the case with you but it is possible.
--
Margus
http://iconstudios.eu
DaVinci 9, OSX 10.7.4
MacPro 5.1 2x2,93 24GB
GTX 470 / Quadro 4000
Multibridge 2 Pro