Hi All,
An update on this issue - unfortunately it still persists.
We have narrowed it down to administrative rights, if we start Revit (the programme to print from) with "run as admin" selected, diRoots and PDF24 execute correctly and the selected pdfs are created. If we *do not* start Revit as administrator, diRoots hangs, waiting for PDF24 in the background.
The same behaviour is observed when starting pdf24 with/without "run as administrator" selected.
This has also been tested with version 9.0.3
Any update or direction from the PDF24 team would be greatly appreciated at this point.