Version 0.10.1 works for me on Yosemite, although there is an update to 0.10.5 which I haven't downloaded yet.
https://handbrake.fr
That's correct, Handbrake will not rip a commercial copy protected CD or DVD. There are programs that will, however, since we operate under the laws of the US we can not discuss this any further. Check the laws of your locale (UK) to make sure what you're doing is legal.Are these DVDs from commercially produced DVDs? If they are copy protected that might be the issue. If I remember correctly Handbrake does not allow you to transcode copy protected DVDs.