In CFW i think it is not possible, because the console is in retail mode. If you use a dongle is diferente because the console is in debug mode.
To play the game you need to install the debug pacht and run in debug mode.
I found the problem, in my usb pen i had the file "options.ini"in the root. This file had my custom settings. The multiMan instead of loading the file from the hard disk, loaded the file that was at the root of usb pen.
When i delete the file in the root, the latest version of multiman works without problems. I don't use CFW.