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This time the edited PDF saved with no problem, but wouldn't open in Adobe Reader because there was insufficient data for an image. I uninstalled other random PDF editing apps and cleaned the registry (yeah, again-some people never learn), uninstalled and reinstalled PDF24, rebooted and tried again. I was using PDF version 2.9.0 (the one with the known Ghostscript bug). So the problem looked to be some sort of Ghostscript issue. I looked at Process Explorer while that was happening, and found that PDF24 was using zero CPUs, while gswin32c.exe appeared to be frozen and was gobbling up CPUs at a steady rate. When I'd try to save the edited PDF, the program would hang, the fan would rev up, and the PDF would be nuked.
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Today I tried to edit and save a PDF (first time since I last posted), and found I was back to square one. As I said, I set the PDF24 printer as the default and only online printer when I use the PDF24 program. If this helps, I'm using Windows XP SP3 32-bit, and have a Brother HL-1440 printer installed along with the PDF24 printer. Thanks for replying sorry it's taken me so long to respond.
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