why not just use one that is already made... by blizzard no less.
search is your friend!
http://www.hiveworkshop.com/forums/icons-541/btninv_fabric_linen_02-a-55327/?prev=search%3Dlinen%26d%3Dlist%26r%3D20
Can't say what your problem is without any info, but you may be interested in this (Acehart Hero EXP tutorial) http://www.thehelper.net/forums/showthread.php?t=68382
Goodluck
I don't know much about this myself, but Acehart uses this in this save/load tutorial:
(http://www.thehelper.net/forums/showthread.php?t=49392&highlight=save%2Fload)
Custom script: if bj_isSinglePlayer then
Trigger - Turn off SaveLoad Save Hero <gen>
Trigger - Turn off SaveLoad Load Hero...