game data/ saves acting weird

backed up GOW3 to an
*external USB using
*rogero manager, but it's been freezing a fair bit, and when I upgraded the weapon, it would disappear and I he would be there waving his arms around with no weapons.

So I am using Gaia Manager (newest), this fixed that problem, but now I had a problem where key parts in the game are messing up.

a door is supposed to open, as the elevator goes to the bottom, and it doesn't..... I tried loading it a couple of times but it's always the same, so I loaded a save before it, and as the elevator was going down, it would stop so the enemies could appear... the music starts, but no enemies..... so the game is stuck and unplayable.

if anyone can understand my ramblings, is there a way to fix it?

I am using a samsung 2tb Story > external.
it used to crash some times when powering up / down.

I copied the game to the internal 60gig (only 5 gig left :-P).
I've gotten past that part.
I will let you know if I have the same problems.