Problem with graphviz

[izghitu@…]

Hello, I have 2 Fedora Core 4 server with python-2.4.1-2

I installed the graphviz plugin for trac (I have trac 0.9.5) On the first server everything went smooth without any problems. However on the second server after doing everything just like on the first one I get this error when trying to use graphviz: Trac detected an internal error: [Errno 32] Broken pipe

Python traceback
Traceback (most recent call last):
  File "/usr/lib/python2.4/site-packages/trac/web/cgi_frontend.py", line 130, in run
    dispatch_request(req.path_info, req, env)
  File "/usr/lib/python2.4/site-packages/trac/web/main.py", line 139, in dispatch_request
    dispatcher.dispatch(req)
  File "/usr/lib/python2.4/site-packages/trac/web/main.py", line 107, in dispatch
    resp = chosen_handler.process_request(req)
  File "/usr/lib/python2.4/site-packages/trac/wiki/web_ui.py", line 92, in process_request
    self._render_editor(req, db, page, preview=True)
  File "/usr/lib/python2.4/site-packages/trac/wiki/web_ui.py", line 311, in _render_editor
    info['page_html'] = wiki_to_html(page.text, self.env, req, db)
  File "/usr/lib/python2.4/site-packages/trac/wiki/formatter.py", line 747, in wiki_to_html
    Formatter(env, req, absurls, db).format(wikitext, out, escape_newlines)
  File "/usr/lib/python2.4/site-packages/trac/wiki/formatter.py", line 576, in format
    self.handle_code_block(line)
  File "/usr/lib/python2.4/site-packages/trac/wiki/formatter.py", line 546, in handle_code_block
    self.out.write(self.code_processor.process(self.req, self.code_text))
  File "/usr/lib/python2.4/site-packages/trac/wiki/formatter.py", line 108, in process
    text = self.processor(req, text)
  File "/usr/lib/python2.4/site-packages/trac/wiki/formatter.py", line 98, in _macro_processor
    return macro_provider.render_macro(req, self.name, text)
  File "/home/trac/scs/plugins/graphviz-0.6.3-py2.4.egg/graphviz/graphviz.py", line 169, in render_macro
  File "/home/trac/scs/plugins/graphviz-0.6.3-py2.4.egg/graphviz/graphviz.py", line 369, in launch
IOError: [Errno 32] Broken pipe

Please help Thank you

[Emmanuel Blot]

Please submit a bug report on ​http://trac-hacks.org.

Graphviz is a plugin and is not maintained within the Trac project.