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PDF Pen Pro Crashing

Pat Bass

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  • Official Nitronaut
Allain Umailin

Hello @Pat Bass,

Thank you for reaching out to us through our Community Forums!

In order for the Nitro Support team to narrow down this behavior, please refer to these steps:

1. Check whether PDFpen launches if you hold down the Shift key while it is opening. This will ensure that PDFpen doesn't attempt to reopen any windows. If that fails, we can do a more thorough job by trying a clean install of the app.

2. If you have any items saved in your library that you may want to save, like signatures, you may want to back them up if you don't have the Mac App Store version (the Mac App Store version does this automatically through iCloud). To back them up, simply save the PDFpen folder at the end of this path:

~/Library/Containers/com.smileonmymac.PDFpenPro/Data/Library/Application Support/PDFpen/Library

The easiest way to get to ~/Library is by going to the Finder, selecting Go in the menu bar, hold down the option key, and then click the Library menu item that should've appeared.

3. Then quit PDFpen and move it from the Applications folder to the trash. Also, move the following folders to the trash:

~/Library/Preferences/com.smileonmymac.PDFpen* (all files with this prefix)

4. Kindly note that if you may see something different to com.smileonmymac.PDFpen depending on whether you use this or the Pro version, or whether it was bought from our website or the Mac App Store. The best rule to follow is to simply look for anything beginning with com.smileonmymac.PDFpen.

5. Afterwards, empty the trash and restart your Mac. Then try reinstalling PDFpen Pro 13 from our website   https://smilesoftware.com/PDFpen/download


If above steps helped but reoccurred after few days, please provide the following information:

-Is this a new issue or has it occurred since after installing PDFpen Pro? Any changes you are aware of before this happened (e.g. Mac Updates)?

-Could you please clarify that the program start freezing and consuming most of the CPU resources by just launching it and not opening a specific PDF file? 

Thank you for your patience and our sincere apologies for this inconvenience.

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