Need help with running a game

Actually, I'd looked into API docs and decided to change it into this:

Code:

s32 cellGameDataGetSizeKB(vm::ptr<u32> size)
{
    if (size)
    {
        *size = 0;
    }
    return CELL_OK;
}

Nevertheless game does not start anyway.
As it is a UE3 game, is this behavior common for all UE3? No UE3 game actually working?

Also, is there a way to log all API calls from and to the game? Including LLE