From: Member 4312265 I'm am having the exact same problem with printing. Same two errors and everything. Did you find a solution? Christian Christian, I have not made any progress. I can't reproduce the problem here and so I'm relying on my users. PDFCREATOR gets them out of trouble. (use it as the default printer, it creates a pdf an then you can print the pdf fine.) Do you have the problem on a development PC ? If so I could send you a test program and we could work on this together. Things I have tried: Make sure .net and OS are fully patched. Remove all code optimisation from my release build. Place all print functions in TRY blocks to prevent the program from chrashing. regards Stuart PS You can download my application at http://www.mapsoft.com.au (miniCAD V5)