OK, A quick issue I found today with Windows 7 and Sage 50 2009.
If you export invoices, statements, or in fact any report to email using the PDF Sage driver you will get an error that says:
“Unable to install printer”
As a work around for the moment, you need to run the application as administrator. Grrrrrr. Lets hope that Sage fix it, and don’t blame Windows 7 for trying to protect you from an administrative change.