Okay, some more observations: In my unstable chroot, "Edit Color Map..." actually gives the same error in other cases as well, but it works on another computer running testing (no chroot).
So it might be something related to either the chroot part (or the Ubuntu X server part) or some other library used by paraview. Ansgar -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org