After upgrading from version 4.10 to version 4.20 if you print from MAS 90 to an Adobe Distiller print driver in order to create a PDF, you may no longer receive the prompt asking where to save the PDF. Instead the PDF is saved to your desktop.
To resolve this issue, open the MAS 90 report (use the designer button and if the designer button does not appear you need access via role maintenance) and check the "No Printer" box underneath printer setup.
For certain general ledger reports (such as financial statements) you'll need to manually locate the report in the \mas90\reports folder and convert it outside of the MAS 90 designer menu.