Description of problem:

"""
Error creating partition

org.freedesktop.DeviceKit.Disks.Error.Failed: Error creating file system: helper exited with exit code 1: cannot spawn 'mlabel -i /dev/dm-2 "::????????????????????????????????"': Failed to execute child process "mlabel" (No such file or directory)
"""

mtools pkg is missing as dep, I had to install it manually.

Then with the same g-d-u-format window I tried to create the partition again with this result:

Error creating partition
org.freedesktop.DeviceKit.Disks.Error.Busy: Device is busy

and now the "Format" item is not in available, until I physically remove the media and physically plug again.

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

nautilus-gdu-0.2-git20090309.1.fc11.x86_64
gnome-disk-utility-format-0.2-git20090309.1.fc11.x86_64