I managed somehow to break LibreOffice 6.0.1.1 in a very strange way.
Background: I had installed 6.0.0.3 in parallel to the default LibreOffice 5
on Ubuntu Mate 17.10. When LO 6 became available from the Ubuntu repository
I uninstalled 6.0.0.3 and let the updater install 6.0.0.3 over the top of LO
5. The installation was subsequently upgraded to 6.0.1.1.
Now LO crashes if I start it and click on File->Open.... It also crashes
(and automatically restarts!) if I start it and click on File->Exit
LibreOffice. However, if I first open a file from the Recent Documents menu
OR let LO recover the untouched empty default document I can then open files
with File->Open... or exit without prompting a crash.
The error message simply says "Due to an unexpected error, LibreOffice
crashed." No clue as to the nature of the error. Anyone have any suggestions
as to how to fix this problem or where to look for further information?