08:29:36 [C] Checkout of jam failed!
Traceback (most recent call last):
  File "/usr/bin/tailor", line 35, in <module>
    main()
  File "/var/lib/python-support/python2.5/vcpx/tailor.py", line 339, in main
    tailorizer()
  File "/var/lib/python-support/python2.5/vcpx/tailor.py", line 144, in __call__
    self.bootstrap()
  File "/var/lib/python-support/python2.5/vcpx/tailor.py", line 74, in bootstrap
    actual = dwd.checkoutUpstreamRevision(revision)
  File "/var/lib/python-support/python2.5/vcpx/source.py", line 253, in checkoutUpstreamRevision
    last = self._checkoutUpstreamRevision(revision)
  File "/var/lib/python-support/python2.5/vcpx/repository/p4/source.py", line 110, in _checkoutUpstreamRevision
    desc=p4.describe(revision, shortForm=True)
  File "/var/lib/python-support/python2.5/vcpx/repository/p4/p4lib.py", line 678, in describe
    desc = changeRe.match(lines[0]).groupdict()
IndexError: list index out of range