I was wondering if anyone could help me.

I've being trying everything now to complete the last part of the Revealing the Unseen mission. I've put the focus crystal in to the machine and the survivor told me that I need to use a flame spell and a frost spell. I've tried both for the past few days, I've read guides, watched video walkthroughs and I've tried everything, nothing works.

Now I'm wondering, is there a bug that is preventing me from completing the mission, and if so; is there a patch or something that can sort this problem out. I know about the saving bug, but I don't think that should have a problem in my gameplay.

Oh yes, I'm playing Skyrim on a Playstation 3. I've tried my other new game (Assassin's Creed Revelations) and it's working fine, I've had my system checked out, and everything is working well.

Thanks. I'll appreciate any help or advice that I can get. I don't want to go on to something else till I've finished this.

Also the retailer feels that they are under no obligation to give a refund, because they are not responsible for bug issues in the game (and I can understand their point), so now I'm stuck with a game that I cannot play. I still have the proof of purchase, so what do I do?

Oh yeah, I'm from Port Elizabeth in South Africa, so it's not like I can just go to the offices and have them sort it out and I don't own a credit card that I can buy online.