Description of problem:

During an install, during the partitioning process, I triggered:

Assertion (part->part_list == NULL) at disk.c:1807
In function ped_disk_remove_partition() failed.

In a previous install I had selected "default layout". This time I selected
"custom layout". I deleted all the partitions by selecting the top-most drive
(the LVM in one case, the actual drives in others) and "delete". Then I created
one new partition on my RAID-0 drive that spanned the entire drive. Then I
created a /boot that was 100 MB in size on the primary hd. Then I wanted to
look at the default layout again because I couldn't remember if it had
allocated a swap partition or not. So I hit Back. Then I picked "Remove all
partitions on selected drives and create default layout". Then it crashed.

Version-Release number of selected component (if applicable):

Fedora Core 6.

How reproducible:

I don't have time to try to reproduce it, sorry.

Steps to Reproduce:
1. See above.
2.
3.
  
Actual results:

Installer crash.

Expected results:

A default layout should have been created. (I had the Review... layout option
checked as well.)

Additional info: