Have the same problem. Can rip by commandline using /dev/hda as source. When using GUI, DCEROUTER.log reports:
ter / Stua) to 10 (Media Plug-in / ), type 1 id 337 Command:Rip Disk, parameters: <0x7b9cbba0>
08 05/08/07 23:20:09.685 Parameter 13(Filename): Unknown disk <0x7b9cbba0>
08 05/08/07 23:20:09.685 Parameter 17(PK_Users): 1 <0x7b9cbba0>
08 05/08/07 23:20:09.685 Parameter 233(DriveID): 1 <0x7b9cbba0>
08 05/08/07 23:20:09.685 Parameter 234(Directory): /home/public/data/videos/DVDer/ <0x7b9cbba0>
05 05/08/07 23:20:09.686 Media_Plugin::CMD_Rip_Disk(): not a drive <0x949fdba0>