Oops…
Trac detected an internal error: If you think this really should work and you can reproduce it, you should consider reporting this problem to the Trac team.

Go to http://trac.edgewall.org/ and create a new ticket where you describe the problem, how to reproduce it. Don't forget to include the Python traceback found below.

TracGuide — The Trac User and Administration Guide 

Python Traceback
Traceback (most recent call last):
  File "/var/lib/python-support/python2.4/trac/web/main.py", line 387, in dispatch_request
    dispatcher.dispatch(req)
  File "/var/lib/python-support/python2.4/trac/web/main.py", line 237, in dispatch
    resp = chosen_handler.process_request(req)
  File "/var/lib/python-support/python2.4/trac/versioncontrol/web_ui/browser.py", line 100, in process_request
    rev_or_latest = rev or repos.youngest_rev
  File "/var/lib/python-support/python2.4/trac/versioncontrol/api.py", line 189, in <lambda>
    youngest_rev = property(lambda x: x.get_youngest_rev())
  File "build/bdist.linux-x86_64/egg/tracvc/mtn/backend.py", line 280, in get_youngest_rev
  File "build/bdist.linux-x86_64/egg/tracvc/mtn/backend.py", line 408, in get_dates
  File "build/bdist.linux-x86_64/egg/tracvc/mtn/cache.py", line 240, in __call__
  File "build/bdist.linux-x86_64/egg/tracvc/mtn/cache.py", line 106, in get_cache
  File "build/bdist.linux-x86_64/egg/tracvc/mtn/cache.py", line 60, in get_cache
  File "build/bdist.linux-x86_64/egg/tracvc/mtn/cache.py", line 187, in __init__
  File "bsddb/dbshelve.py", line 73, in open
MemoryError: (12, 'Cannot allocate memory -- Lock table is out of available locker entries')