OMV LX 3.03
Upon updating firefox ->61 and thunderbird -> 60 I got this in only one of my computers:
Error in file "/usr/share/applications/org.kde.kfontview.desktop": "font/otf" is an invalid MIME type ("font" is an unregistered media type)
The other computer doesn’t have thunderbird and issued no error message.
There are some reports on this here,
1541225 – unknown media type messages and others received during upgrade
Is this a problem?