strange java problem

[leespud]

hi i have got a problem with installing java games on my 3650, i use efilemanager and a mmc reader, i transfer the jar file to my mmc then open efilemanager and select the game, i started by just unzipping the file not starting the installer, i realised this was because i had zipman installed, but now when i select the file efilemanager just freezes and does nothing, does anybody know how to solve this problem?

many thanks