Thanks to macuser_22 on a similar thread I tried just waiting much longer for the print dialogue to come up even though my Mac was saying the application was unresponsive. It did appear after a few minutes and allowed me to print, pdf etc. After that long wait printing again went back to normal.
Here's the other thread:https://ttlc.intuit.com/community/taxes/discussion/unable-to-print-preview-or-export-to-pdf-from-tt-...
