What should I do when one of my PDFs is crashing PDFpen?
The original document may be off spec, or you may have uncovered a bug. Please try opening the original in PDFpen then select File > Print > PDF > Save as PDF... Open the newly saved document and perform your edits. If that works, please consider sending us the original document so that we can analyze why and hopefully make PDFpen handle that more gracefully in a future release.
You can also send us your crash log to examine.
Could you see if the crash log file is in the folder to send to us:
[Home] / Library / Logs / DiagnosticReports / PDFpenXXX.crash
The easiest way to get there is to click on the Finder, then choose 'GO -> Go to Folder' and paste in this path below:
~/Library/Logs/DiagnosticReports