GubiD's Tactical Battle System Help!!!!!!

http://www.mediafire.com/file/kmg2evmbngw/GTBS_VX+v1.0+release.zip

This is the link to his rgss2 demo. (I use rpg maker vx)

The problem is, whenever one saves after a battle it gives you the error:

Script 'Scene_File' line 214: Type Error occurred.
no marshall_dump is defined for class Sprite_Character

I would TREMENDOUSLY APPRECIATE someone's help! =]
I am not too amazing with scripts.