Description of problem: When trying to enter custom partitioning with a messed up set of disks (various broken mdraids and lvms most likely) I hit this. It only shows up on tty1 and isn't logged to anaconda-tb-* The error happens at: ui_roots = self.__storage.roots[:] in pyanaconda/ui/gui/spokes/custom.py roots is a dict, not a list, and this code is fairly old. I wonder why it hasn't blown up before.
I have a patch for this. I have no idea how that code has lasted as long as it has.
anaconda-18.36-1.fc18 has been submitted as an update for Fedora 18. https://admin.fedoraproject.org/updates/anaconda-18.36-1.fc18
Package anaconda-18.36-1.fc18: * should fix your issue, * was pushed to the Fedora 18 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing anaconda-18.36-1.fc18' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2012-19870/anaconda-18.36-1.fc18 then log in and leave karma (feedback).
anaconda-18.36-1.fc18 has been pushed to the Fedora 18 stable repository. If problems still persist, please make note of it in this bug report.