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["Olivier Dony \(OpenERP\)" <701058@xxxxxxxxxxxxxxxxxx>]

The fix was merged in trunk server with revision 3285
odo@xxxxxxxxxxx-20110117170525-bbqh6k584k6ssa0g

Thanks for taking the time to report this!

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https://bugs.launchpad.net/bugs/701058

Title:
  error when printing subworkflow of purchase order

Status in OpenObject Server:
  Fix Released

Bug description:
  Create a purchase order then try to print the subworkflow:

  [2011-01-10 16:09:24,083][s5] ERROR:workflow:[01]: Exception in call: Traceback (most recent call last):
  [2011-01-10 16:09:24,083][s5] ERROR:workflow:[02]:   File "/home/nel/openerp/trunk_server/bin/addons/base/ir/workflow/print_instance.py", line 154, in __init__
  [2011-01-10 16:09:24,083][s5] ERROR:workflow:[03]:     graph_instance_get(cr, graph, inst_id, data.get('nested', False))
  [2011-01-10 16:09:24,083][s5] ERROR:workflow:[04]:   File "/home/nel/openerp/trunk_server/bin/addons/base/ir/workflow/print_instance.py", line 107, in graph_instance_get
  [2011-01-10 16:09:24,083][s5] ERROR:workflow:[05]:     graph_get(cr, graph, [x[0] for x in inst], nested, workitem_get(inst_id))
  [2011-01-10 16:09:24,083][s5] ERROR:workflow:[06]:   File "/home/nel/openerp/trunk_server/bin/addons/base/ir/workflow/print_instance.py", line 41, in graph_get
  [2011-01-10 16:09:24,083][s5] ERROR:workflow:[07]:     (s1,s2) = graph_get(cr, graph2, n['subflow_id'], nested,workitem)
  [2011-01-10 16:09:24,084][s5] ERROR:workflow:[08]:   File "/home/nel/openerp/trunk_server/bin/addons/base/ir/workflow/print_instance.py", line 30, in graph_get
  [2011-01-10 16:09:24,084][s5] ERROR:workflow:[09]:     cr.execute('select * from wkf_activity where wkf_id in ('+','.join(['%s']*len(wkf_ids))+')', wkf_ids)
  [2011-01-10 16:09:24,084][s5] ERROR:workflow:[10]: TypeError: object of type 'int' has no len()