Little Big Planet 2 PS3 help?

[looky]

So I've downloaded Little Big Planet 2 USA version, copied it on my external HDD, installed the 3.55 PKG that was inside the download package, loaded the game with multiman, but when I try to run it, it says there's a error in game data and then it closes.

I thought that was an error during copying to the HDD, so I copied it again, and there's the same error.

I'd be grateful for any help.

[B4rtj4h]

What version of Multiman are you using? And what console do you have? Phat?

[looky]

I'm not quite sure which version it is, I installed it in March last year, and haven't updated it since, but every game I tried playing, worked, even newer games with various fixes, etc. The console is 320GB Slim version.

So far I tried deleting the PKDIR, PS3_EXTRA and the data installed by the PKG, that didn't work, gave me still the same error.
Then I found another PKG, installed it, and still the same error.

There doesn't seem any other solution besides downloading it one more time, from another place.