HP Officejet 5510 - Unable to Initialize Scanner

I am trying to use the Microsoft Office Document Scanning feature and
am getting an error message when trying to configure the scanner. The
error message is "Unable to Initialize Scanner". I have tried the "hp
officejet 5510" and "hp officejet 5510 TWAIN" selections, and both get
the same results.

I have also tried checking with HP to make sure I have the latest
software updates, and as far as I can tell, I am using the latest
drivers.

There are no yellow exclamations in Device Manager, and the scanner
works fine when using the HP Scanning software that it came with. I
just cannot get any third-party scanning software to work. I have even
tried using Scansoft Paper Port 10 with no success (similar error
messages, unable to find scanner.)

Any suggestions on how to get PaperPort or Microsoft Office Document
Imaging to recognize the scanner? If it helps, the scanner supports
both flatbed and ADF (auto-document feeder.)
Thank you,

Mike M.
Paoli, PA