When saving a worksheet update in Libreoffice Calc 5.2.3 for Ubuntu, I get a message stating: 'Installing fonts on request isn't supported'. This also happens when the worksheet is on autosave. Any ideas?

[Sawsmith]

This happens all the time and only since the upgrade to 5.2.3.

[ilmari]

Does the answer to this help: http://askubuntu.com/questions/832857/installing-fonts-on-request-isnt-supported-error-message