julitime

I don't know exactly how to help you, but understand this, it is not anything you are doing wrong; it's a compatibility problem between IE7 and Vista. It is a problem with either DEP (data execution prevention) or the updates that Vista's Updates automatically download.

I had this problem and eventually switched to Mozilla Firefox, as no help was available anywhere. I accidentally found that others were having the same problem when searching through MS Windows web site.

Because of other problems, I switched back to IE7 recently and my downloads worked fine, but today, most likely after Windows Updates were installed, I am now having the same problem. I'll keep you posted if I learn anything more...at least you don't have to feel like it's your fault.