Try ripping it to your home folder. It is likely set up to rip to /tmp in
the root file system which you can only do as root. It is probably in the
settings some place to change the location for the temp files.

Actually /tmp and /var/tmp must be world-writable or many programs will
break.

Unix, owing to the long heritage of multi-user systems, prevents random
users from writing to arbitrary locations in the filesystem. Pick a
directory where you have write access (somewhere in your home folder,
/tmp, /var/tmp, or some other directory where you've been given write
access) and all should be copasetic.

I'll try but neither of these suggestions makes any sense. I'm the only user on
both linux's. I think the problem is that I'm not logged into the one on the
Hard Drive when I boot from the USB. But it doesn't affect other programs.

Also, isn't the Home and tmp folder under the USB Kdenlive still on the USB
device? Which is my whole point in trying to put it on the Hard Drive, space.