O.k. First, I love the Mod. I just put it on my server and have been playing sp for a while now with no issues with extended Backpack. On Server though the backpack works fine unless you log out then back in, then you see the 72 slots, but can only use the basic 32? as you play after a while the game excepts the 72 and you can use all of the slots until you log out again. also if you have items in slots 33-72, you loose them when you log out. any suggestions as to what i did wrong? I guess i should say that the way i use the expanded backpack is to alter the windows.xml file as suggested in the file.