Libreoffice 6.4.7.2 not starting, screen goes blank

Starting from terminal it had a d-bus error. Logo splash starts.
Put “export NO_AT_BRIDGE=1” in .profile file (like suggested in arch forum)
Start again from terminal, flash starts then screen freezes then goes blank. Have to hard boot.
Any clues to fix, or if you need more info?
thanks
Reinstalled (libreoffice) after first problem (2 hour build!) still not launching.

Extra info: I was going to reinstall but noticed that LibreOffice doesn’t work on the nightly live cd either.
Bit of a deal breaker really

Update: Found a temp work-a-round. Installed gnu-guix package manager and then installed libreoffice with guix package manager. Now working.