Interactive desktop message "Unable to create working area"

[paolod]

I've installed Bullzip PDF Printer (9.3.0.1516, latest stable version) and shared through my print server (Windows Server 2008 (not R2!) x86 SP2 Print Services).
I also distributed in Active Directory.
Any time any user try and create a PDF, on print server appears an interactive desktop message by C:\Windows\System32\spoolsv.exe, saying me that PDF Printer is "unable to create working area".
Message also suggests there can be a partial incompatibility with Windows.
Is this a known problem with a known solution?

[paolod]

Same interactive desktop behaviour using version 9.4.0.1570, that is, MSI installers for bioPDF, GhostScript Lite and Xpdf.
This time, error message is a "Create file" from C:\Program Files\bioPDF\PDF Writer\gui.exe.
Please make available recently released 9.5.0.1579 version as MSI installer.