id,summary,reporter,owner,description,type,status,priority,component,severity,resolution,keywords,cc,release 11823,Stalls and crashes on Trac 1.0.1,anonymous,Martin Scharrer,"This plugin will not work for me using Trac 1.0.1 I am running it on an Ubuntu 14.04 Server which is running Python 2.7.6 with Graphviz 2.36 installed. I installed it as an .egg in my environment's plugins folder using the latest ZIP download (changeset 13847). When I load the page in the admin panel it loads the ""Actions"" buttons, ""Columns"" checkboxes, and the save/cancel/restore/text buttons, but nothing loads for the actual workflow table, and the workflow diagram just says ""Updating..."" but never loads either. If I try clicking either of the ""Save changes"", ""Cancel"", ""Restore initial state"", or ""Text mode"" buttons it also causes an internal error in Trac with the following Traceback: {{{ File ""/usr/local/lib/python2.7/dist-packages/trac/web/main.py"", line 497, in _dispatch_request dispatcher.dispatch(req) File ""/usr/local/lib/python2.7/dist-packages/trac/web/main.py"", line 214, in dispatch resp = chosen_handler.process_request(req) File ""/usr/local/lib/python2.7/dist-packages/trac/admin/web_ui.py"", line 125, in process_request path_info) File ""build/bdist.linux-x86_64/egg/tracworkflowadmin/web_ui.py"", line 136, in render_admin_panel self._parse_request(req) File ""build/bdist.linux-x86_64/egg/tracworkflowadmin/web_ui.py"", line 672, in _parse_request params = json.loads(req.args.get('params')) File ""/usr/lib/python2.7/json/__init__.py"", line 338, in loads return _default_decoder.decode(s) File ""/usr/lib/python2.7/json/decoder.py"", line 366, in decode obj, end = self.raw_decode(s, idx=_w(s, 0).end()) }}} Inspecting the `req.args.get('params')` value shows that it is None which is what's causing that specific error. I have quite a few plugins installed, but the only ones that effect workflow, tables, or use Graphviz are: ||= [http://trac-hacks.org/wiki/AdvancedTicketWorkflowPlugin AdvancedTicketWorkflowPlugin] =|| 0.11dev || ||= [http://trac-hacks.org/wiki/TableSorterPlugin Table-Sorter-Plugin] =|| 1.0 || ||= [http://trac-hacks.org/wiki/WorkflowActionButtonsPlugin trac-WorkflowActionButtons] =|| 0.2 || ||= [http://trac-hacks.org/wiki/MindMapMacro TracMindMapMacro] =|| 0.4 || I do also have a fairly large workflow I am using: {{{ [ticket-workflow] accept = new,assigned,accepted,reopened,needs_info,reviewing,in_progress -> accepted accept.operations = set_owner_to_self accept.permissions = TICKET_MODIFY failed = testing -> in_progress failed.name = failed testing failed.permissions = TICKET_MODIFY in_progress = new,assigned,accepted,reopened,needs_info,reviewing -> in_progress in_progress.name = in progress in_progress.permissions = TICKET_MODIFY leave = * -> * leave.default = 1 leave.operations = leave_status needs_info = new,assigned,accepted,reopened,reviewing,in_progress -> needs_info needs_info.name = needs additional information needs_info.permissions = TICKET_MODIFY passed = testing -> closed passed.name = passes testing passed.operations = set_resolution passed.permissions = TICKET_MODIFY passed.set_resolution = fixed reassign = new,assigned,accepted,reopened -> assigned reassign.operations = set_owner reassign.permissions = TICKET_MODIFY reassign_in_progress = in_progress -> * reassign_in_progress.name = reassign to reassign_in_progress.operations = set_owner reassign_in_progress.permissions = TICKET_MODIFY reassign_needs_info = needs_info -> * reassign_needs_info.name = reassign to reassign_needs_info.operations = set_owner reassign_needs_info.permissions = TICKET_MODIFY reassign_review = review -> * reassign_review.name = reassign to reassign_review.operations = set_owner reassign_review.permissions = TICKET_MODIFY reassign_testing = testing -> * reassign_testing.name = reassign to reassign_testing.operations = set_owner reassign_testing.permissions = TICKET_MODIFY reopen = closed -> reopened reopen.operations = del_resolution reopen.permissions = TICKET_CREATE resolve = new,assigned,accepted,reopened,needs_info,reviewing,in_progress -> closed resolve.operations = set_resolution resolve.permissions = TICKET_MODIFY review = new,assigned,accepted,reopened,needs_info,in_progress,testing -> reviewing review.name = needs review review.permissions = TICKET_MODIFY testing = new,assigned,accepted,reopened,needs_info,reviewing,in_progress -> testing testing.name = needs testing testing.permissions = TICKET_MODIFY }}} There is nothing in the logs at all when the page fails to load, and there is only the traceback when the internal error occurs.",defect,closed,normal,MindMapMacro,normal,fixed,jqueryui,,1.0