Our code is making use of the devmode structure and when I generate a PDF file and later print the file from Windows XP, the PDF file is duplexed as it is supposed to be. However, when I run the same code in Windows 98, the item is not duplexed. I've tried several printers and the result is the same. What's more, I can actually see the paper going through the duplexer in 98 (and it even gets stuck in the duplexer sometimes), but the page comes out simplexed and all pages are printed simplexed.
Does anyone have any ideas why this may be so?