Problem with dsq milkshape

I create a player and export a base .dts called "player.dts" only skeletor...
I create a root pose and pistol pose in tow different file and i export a dsq...
Root it's ok but i set "ArmThread = pistol;" in mi pistol.cs file and game crash in loading mission....
Why?
A pistol.dsq is static animation....I set in dts export plus a point?
Help thanks =)