I've spent 8 hours trying to install either of 2 different scanners on my XP home system - an HP3500c and a Canon LiDE30.

I get the class installer error message after installing the drivers and when I plug in the USB connector to the scanner.

At first I thought it was a problem with the HP unit, so I took it back and decided to try the Canon, but got the same result. I spent an hour on the phone with HP tech support before returning the first unit - we tried installing in safe mode, upgrading to SP1, running virus scanners, and deleting all non-essential items from the Enum/USB section of the registry - none of which helped.

When the Canon unit install failed with the same error, I decided it must be an XP problem, so I tried their new online Chat support service, but they ended up referring me to the phone support. I spent another hour and a half on the phone with them, without positive results - they have now referred it to their research team. I can't believe I'm the only one to have run into this frustrating issue.

Does anyone out there have any suggestions (other than formatting my hard drive).