I found that the skeleton of Masked Soldier was changed in version 1.009 of FPSCR.
if you import FPSCR animations to FPSC Model Packs characters, you have to use 'Masked Soldier.X' file from 1.0085 or earlier version of FPSCR!
Rafhalzer
ANIMER - Character Animations Editor.
Edit and create your own animations of FPSC characters.
Supports DirectX and DBO formats.