Hi,
I have just posted on another thread a problem with Dorico 4 crashing every time when a new playing/playback technique is assigned as default. I have read the posts here and following your advice copied the user file from crashing machine to another machine with the same OS (Big Sur) and D4. Once I replaced the original file with the copied one, Dorico 4 would not even start. It was continuously crashing on boot. So obviously there is something wrong with the userlibrary.xml file. Anyone here encountered such a problem? Did you find a solution? Can you share it?
Witold