Give the prize to @MarkKotyla on this one. He did a great job pointing me in the right direction. 'Allow External Access' was turned off at the company level and the 'Enable C/S ODBC Driver' was not turned on at the user level. The funny thing is that I could open the table through ODBC with a linked table but I could not open the table via a PTQ.
To make things more interesting, I went back in after getting things to work, turned the switches off, and the PTQ continued to work. I can't explain it but it's working so I'm moving forward.
Thanks to all of your for your help on this Easter Day. I hope you all took the opportunity to spend it with your families.