DVDrip fails when trying to create a project. The message contains the DVD being ripped.
An internal exception was thrown!
The error message was:

can't write /media/system/LIFE_AS_WE_KNOW_IT/Life.rip at /usr/share/perl5/Video/DVDRip/Project.pm line 158.
This is under Ubuntu MATE 16.10. The existing folders are all present. Script checks have no errors (comments are all in green). But obviously something's broken. What?