Try the xbplorer360 program. It's another way to get your gamesaves on the usb stick.
So basically, put the stick in the xbox and let the m$dash format it to fatx.
Copy a gamesave to it to ensure everything works fine.
Put the stick in your pc and start the xplorer360 program. Unzip or unrar your gamesave if needed.
Copy the gamesave to the stick.
Put the stick back in the xbox, and copy the gamesave to the xbox harddisk before you use it.
Run the original exploitable game and ....
regards.
