Please copy and zip up the complete error message and post it here.
A few other things to try ...
1. Go to your sigil preferences folder and copy and then rename the sigil.ini file
2. Try opening Sigil by directly double clicking on the app icon inside the Applications folder itself
3. Try by dragging and dropping a known good epub on the Sigil app icon
4. Use Terminal.app to launch Sigil to see if that gives more info
- Double Click on Terminal.app in Applications
- once Terminal.app opens type the following in the Terminal and hit return
open /Applications/Sigil.app
- copy any error messages
Last edited by KevinH; 11-03-2020 at 08:52 AM.
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