Hi Dave,
This list is for developer discussions.
You would be better off looking:
https://www.libreoffice.org/get-help/community-support/
https://www.ubuntu.com/support/community-support
Having said that, i'd try clearing your config files by opening a
terminal (with libreoffice closed) and
Good day.
I am experiencing documents failing to open and stay open using
libreoffice. I have reloaded both libreoffice-calc and writer but the
problem persists. No luck using menu/office/libreoffice & then either
calc or writer., in an endevour to open an existing document there
