A couple of things Steve,

Especially if you have an extra copy of WIN7 around that you can play with a little. Because some of the solutions may be more for 32-bit OS, although I was able to fix some issues with VSS on SBS 2008 x64 with the same.

I have fixed at least three installs using the registering of .dlls.

http://www.amazingcharts.com/help/support_faq.htm

None of yours are specifically mentioned, but there are quite a few batch files that may solve the problem. Set a system restore point each time.

The other thing, and I am sure you are installing as an admin by the right click method. I know you are already past the install.

I would definitely look at the dll registering given they are showing up in your error messages.

SEE MY LAST COMMENT FIRST.

Bert
Pediatrics
Brewer, Maine