yes i reinstalled it clean .. and multiple media types meaning ?
and i'm still tryin to patch the game but that errors aswell
thank you for helping me btw

# NoQuarter : ^
Did you perform a "clean" un-install of the programs... removing -or deleting- the profile and config files from *:\Users\*\Documents\ArmA 2 (or \ArmA 2OA), followed with a registry sweep/cleaning prior to the re-install?
Are you using the same type of media (DVD or DD) or are you using multiple media types?

Added 1 hour 8 minutes later:

The install worked i got a destkop item -> arma 2 combined operations so it's working now ..
but i only need to find a way to patch it cause it gives me an error that says someting of my CA.pbo file causes the error
after i installed oa i immediatly installed BAF / PMC and i think that's the addon that's causing the errors cause i can't patch the game up anymore .. i think .. i don't bloody kno .. xd

# NoQuarter : ^
Did you perform a "clean" un-install of the programs... removing -or deleting- the profile and config files from *:\Users\*\Documents\ArmA 2 (or \ArmA 2OA), followed with a registry sweep/cleaning prior to the re-install?
Are you using the same type of media (DVD or DD) or are you using multiple media types?