[Health-dev] [bug #37791] what is causing this when i try to create a lab invoice

[isaac ndagu]

URL:
  <http://savannah.gnu.org/bugs/?37791>

                 Summary: what is causing this when i try to create a lab
invoice
                 Project: GNU Health
            Submitted by: isaac
            Submitted on: Fri 23 Nov 2012 07:39:00 AM GMT
                Category: None
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
                 Release: None
                  Module: lab invoice

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Details:

/home/hp/.local/lib/python2.7/site-packages/tryton/gui/window/view_form/view/list.py:735:
GtkWarning: gtk_tree_view_unref_tree_helper: assertion `node != NULL' failed
  self.widget_tree.set_model(self.store)
ERROR:common.message:Traceback (most recent call last):
  File "/trytond/protocols/jsonrpc.py", line 123, in _marshaled_dispatch
    response['result'] = dispatch_method(method, params)
  File "/trytond/protocols/jsonrpc.py", line 156, in _dispatch
    res = dispatch(*args)
  File "/trytond/protocols/dispatcher.py", line 156, in dispatch
    res = getattr(obj, method)(*args_without_context, **kargs)
  File "/trytond/wizard/wizard.py", line 341, in execute
    state = self.states[state_name]
KeyError: 'start'





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