Backup Exec 10.1 won't repair, can't install SP either.

Hello,

I have an old Windows 2003 server running Backup Exec 10.1, and it's started failing. I wanted to update to SP6, but get an error of:

"The installation source for this product is not available,. Verify that the source exists and that you can access it."

I decided to try to repair the install, but in add/remove programs when you press the change button, you get a quick flash of a window trying to open, then nothing.

Any suggestions?

Thanks,

F1Joe