Fyi ...

Following the instructions listed earlier, I Uninstalled, Restarted then re-installed as Administrator using AdagioV2PDF.exe from the Softrak\System\AdagioPDF folder. This was done on both PCs, one where UAC was off and on the other UAC was on. All went according to plan and the AdagioV2PDF printer driver is there on both machines.

However, in terms of the original issue, the re-installation only fixed one of the PCs (the one where UAC was on, yes on).

The original issue is that the PDFs were printing to the default printer (instead of creating the file) and the process would hang leaving [End Task] as the only way out. I guess I should post that issue separately.

Pete