Problem with Tankentai SBS XP

Hi, i am currently making an RPG game using RMXP, and i am trying to use  Tankentai SBS XP.

There are so many addons so instead of posting entire script ill just post the link to where you can DL the script:
http://www.rmxpunlimited.net/resources/scripts/item/sideview-battle-system-tankentai-xp?category_id=11
also you can see what addons i am using in the pic

Everything goes well except when i am in battle and inside the page where i choose skills (see pic), if i then press the "C" button (back button also called "b" button because i like gameboy) all the way so it is supposed to cancel my turn, i get an error
"Script 'Atoa ATB' line 1155: NoMethodError occurred.
undefined method 'cast_speed' for nil:NilClass"
(see pic)


pic:

Uploaded with ImageShack.us

or if you cant see the pic: http://imageshack.us/photo/my-images/199/supporttankentai.png/

if there is something you need that i didn't include, just make a comment about it

-akin

any help will be credited in my game 

please anyone! i realy need this!