I've tried a lot a bag addons but this one is still my favorite.
Unfortunately the author discontinued this version and created an new bag addon called vBagnon .
It never worked for me like the old one did, so i was happy when i found that jbottz patched the old version for the TBC beta.
However after TBC went live it got broken as well and hasn't been updated since.
I patched his latest version (BC3) so that it works again (well it does for me so far).
I've you find any errors please let me know and i'll see what i can do.