Description of problem:
tried liveimage-mount

Version-Release number of selected component:
livecd-tools-20.0-1.fc20

Additional info:
reporter:       libreport-2.1.6
cmdline:        /usr/bin/python -tt /bin/liveimage-mount Downloads/Fedora-19-x86_64-netinst.iso tmp
executable:     /bin/liveimage-mount
kernel:         3.11.0-3.fc20.x86_64
runlevel:       unknown
type:           Python
uid:            0

Truncated backtrace:
liveimage-mount:83:rcall:NameError: global name 'CreatorError' is not defined

Traceback (most recent call last):
  File "/bin/liveimage-mount", line 297, in <module>
    main()
  File "/bin/liveimage-mount", line 224, in main
    imgloop = rcall(losetup_args + [ext3_img]).rstrip()
  File "/bin/liveimage-mount", line 83, in rcall
    raise CreatorError(u"""Error in call:\n'%s'\nenviron: '%s'
NameError: global name 'CreatorError' is not defined

Local variables in innermost frame:
err: 'losetup: /tmp/livemnt-squash-57HQP0/LiveOS/ext3fs.img: failed to set up loop device: No such file or directory\n'
args: ['/sbin/losetup', '-f', '--show', '/tmp/livemnt-squash-57HQP0/LiveOS/ext3fs.img']
p: <subprocess.Popen object at 0x7fd02b8eb550>
environ: None
env: None
out: ''