I can't figure out why the 1.04 patch keeps stopping at 61% stating the following error: "An error has occurred while accessing the disk. Please ensure that no game file is being used, that you have enough space, and try again." As far as I know, there are no files being used and I definitely have plenty of HD space. Did anyone else see this happen, and if so, what would cause this to pop up? I've tried uninstal/reinstall a couple of times and it happens every time. Any ideas?

P4 2.8Ghz 1gb of ram, with an nVidia 7900GS