Comment 2 for bug 1807973

this issue is caused by a change in behavior in tar 1.3, wherein it sets the exit code "2" when positional arguments are used out of order.

The fix to this problem is to modify /ar_backend/tar.py. Change

    options.append('--files-from=%s' % tmp_incl)
    options.append('--exclude-from=%s' % tmp_excl)

to

    options.append('--exclude-from=%s' % tmp_excl)
    options.append('--files-from=%s' % tmp_incl)