@CullenLowe Thanks for the insight. The Sage tech guy did download Foxit but the same error resulted as when we used Adobe. I rarely store the paperless folders under the MAS90 folder anymore as that just create work when you have to do a parallel install of the latest flavor of MAS. In fact, this client (new to me in the past month) didn't realize where her PDF's were being stored until we deleted her MAS v4.2 folder (she didn't want the old files hanging around as lost two days one time when they posted to an old install). About an hour later when she was updating an AP entry, she found out the paperless folders no longer existed. Oops. Luckily, they had a good backup from the night before.
Regarding the port, at our MOTM conference last spring (have you taken the survey yet), we had a session where c:\users\public\sage was presented as the path of least resistance for the paperless port.
The tech also looked for the zero KB pdf's, to no avail.
All in all, I was very satisfied with my tech today. Unfortunately, there resolution is proving elusive.