Problems ripping DVD with Arista: no valid dvd title found

[eightwhitepawsinc]

Binary package hint: arista

i had some success with handrake to rip dvd's in older versions of ubuntu. i now have a clean install of 10.10 and know that handbrake is not compatible (even tried the ppa of the nighly builds without success). In looking for alternatives, i cam across arista transcoder....which seems perfect for my needs (simple), but whenever i put a dvd in the queue its gives me an error that says conversion failed....no valid dvd title found. this happens no matter what dvd i use and no matter what preset i choose. can someone help?

i am using the ubuntu 10.10
arista: 0.9.5-1ubuntu1
i expected the program to rip the dvd
see above for what happened.