relevant software versions: trac 0.11rc1, git 1.5.5.1, latest GitPlugin, as of May 29
there appeared to be no way to get the traceback for the 0.11 version of the plugin, as opposed to the 0.10 one
the part of the logfile that seemed relevant:
2008-05-30 04:57:37,249 Trac[default_workflow] DEBUG: Workflow actions at initialization: {'resolve': {'operations': [u'set_resolution'], 'name': 'resolve', 'default': 0, 'newstate': u'closed', 'oldstates': [u'new', u'assigned', u'accepted', u'reopened'], 'permissions': [u'TICKET_MODIFY']}, 'accept': {'operations': [u'set_owner_to_self'], 'name': 'accept', 'default': 0, 'newstate': u'accepted', 'oldstates': [u'new', u'assigned', u'accepted', u'reopened'], 'permissions': [u'TICKET_MODIFY']}, 'leave': {'operations': [u'leave_status'], 'name': 'leave', 'default': 1, 'newstate': u'*', 'oldstates': [u'*'], 'permissions': []}, 'reopen': {'operations': [u'del_resolution'], 'name': 'reopen', 'default': 0, 'newstate': u'reopened', 'oldstates': [u'closed'], 'permissions': [u'TICKET_CREATE']}, 'reassign': {'operations': [u'set_owner'], 'name': 'reassign', 'default': 0, 'newstate': u'assigned', 'oldstates': [u'new', u'assigned', u'accepted', u'reopened'], 'permissions': [u'TICKET_MODIFY']}, '_reset': {'operations': ['reset_workflow'], 'name': 'reset', 'default': 0, 'newstate': 'new', 'oldstates': [], 'permissions': []}}
2008-05-30 04:57:37,261 Trac[env] WARNING: base_url option not set in configuration, generated links may be incorrect
2008-05-30 04:57:37,262 Trac[main] DEBUG: Dispatching <Request "GET u'/browser'">
2008-05-30 04:57:37,345 Trac[git_fs] INFO: detected GIT version 1.5.5.1
2008-05-30 04:57:37,515 Trac[svn_fs] DEBUG: Subversion bindings imported
2008-05-30 04:57:37,568 Trac[PyGIT] DEBUG: PyGIT.Storage instance 141808716 constructed
2008-05-30 04:57:37,569 Trac[PyGIT] DEBUG: requested PyGIT.Storage instance 141808716 for '/mnt/enter/git/common-db/.git/'
2008-05-30 04:57:37,571 Trac[git_fs] INFO: enabled CachedRepository for '/mnt/enter/git/common-db/.git/'
2008-05-30 04:57:37,748 Trac[PyGIT] DEBUG: triggered rebuild of commit tree db for 141808716
2008-05-30 04:57:38,090 Trac[PyGIT] DEBUG: rebuilt commit tree db for 141808716 with 54 entries
2008-05-30 04:57:38,098 Trac[api] DEBUG: action controllers for ticket workflow: ['ConfigurableTicketWorkflow']
2008-05-30 04:57:38,947 Trac[main] WARNING: 500 Trac Error (internal error (got unexpected object kind 'commit'))