This problem is a disaster. It is been continuous for the last several months. I am in touch with tech support and despite software updates, it persists. They say the crashing happens with applications that rely on Apple’s PDFkit and they are waiting for an update from Apple. Perhaps, but no other app I use is crashing. I am dumbfounded such a critical error could go on for so long.
I have since gotten a brand new computer and intalled a fresh copy of EndNote. Same problem.
If I did not invest hundreds (thousands?) of hours building up my EndNote libraries, I would quickly switch to a different product. I held out for years putting my PDFs in EndNote b/c I have always been hesitant about trusting the clunky old-fashioned feeling application to manage all my scientific papers. Now my fears have turned into a nightmare.