Hi

I have noticed these two glitches that occur in a new save on the Xbox 360.

The first one was that I couldn't cast spells, and when I escaped the prison, every NPC I found was invisible.

The second one was that the game wouldn't let me use heavy attacks. I would just hold my weapon in a strange position.

Has anyone had any experience with these glitches, and do you know why these occur?

Thanks