Same problem when I attempt to install a raring-amd64-desktop. Ubiquity version 2.13.6
Linux lubuntu 3.7.0-4-generic #12-Ubuntu SMP Tue Nov 27 23:13:21 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
Same problem when I attempt to install a raring- amd64-desktop. Ubiquity version 2.13.6
Linux lubuntu 3.7.0-4-generic #12-Ubuntu SMP Tue Nov 27 23:13:21 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux