Sorry, I should have been more thorough... even though composite was working fine in Feisty I had it turned off in xorg.con. Upgrading to Gutsy does not reset this. So just turning it back on in xorg.conf worked.
However, the dialog box is what is borked, it should allow you to click "OK" to close it (and maybe say something more about missing Composite). -- Error dialog box OK button does nothing in Visual Effects. https://bugs.launchpad.net/bugs/149972 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs