Originally Posted by tsac
Try turning off the anti virus until it's installed. Do not go anywhere until you turn it back on. Also do not have any other applications( IM, internet etc.) running at the time.
Also the old install may be corrupted and still be on the computer. Try removing the application totally using the software removal tool on the PC operating system. Download a new copy or use one last downloaded.
Try one of the registry cleaning tools from CCleaner. This tool will remove all unnecessary cookies and other temporary files. Also it has a registry cleaner to clean out broken links in the registry. It's free.
That sounds like a job for Super-Hubby... except I broke him last weekend by asking for a hard-wood floor. I'll take a look at this and see if I can get it to dance. Thanks!