Thanks to Ticrobs example document and description we were able to reproduce the error and find a temporary solution:
Run regedit.exe and change HKEY_CURRENT_USER\SOFTWARE\pdfforge\PDFCreator\Settings\ConversionProfiles\0\PdfSettings FastWebView to false. (0 is the default profile, to set this for other profiles replace 0 with the number of the profile you are going to use)
We usually use -dFastWebView=true which enables to display the start of the PDF before the end has been loaded, but this seems to be causing a Ghostscript error under some conditions.
Best regards,
Robin