id	summary	reporter	owner	description	type	status	priority	component	severity	resolution	keywords	cc	release
9066	TypeError: execv() argument 1 must be encoded string without NULL bytes, not str	anonymous	kisielk	"my Trac version is 0.12b1 and I use the version [https://bitbucket.org/kisielk/tracmathplugin/get/3400be420ed8.tar.gz https://bitbucket.org/kisielk/tracmathplugin/get/3400be420ed8.tar.gz ] as the solution of the 'show_err' error mentioned in the [ticket:8557 ticket 8557].

but there comes the error message 
{{{
Trac detected an internal error: 
TypeError: execv() argument 1 must be (encoded string without NULL bytes), not str
}}}
my Python Traceback
{{{
File ""/usr/lib/python2.4/site-packages/Trac-0.12b1-py2.4.egg/trac/wiki/templates/wiki_view.html"", line 58, in <Expression u'wiki_to_html(context, text)'>
  <div id=""wikipage"" py:content=""wiki_to_html(context, text)"" />
File ""/usr/lib/python2.4/site-packages/Trac-0.12b1-py2.4.egg/trac/util/compat.py"", line 83, in newfunc
  return func_(*(args + fargs), **dict(kwargs, **fkwargs))
File ""/usr/lib/python2.4/site-packages/Trac-0.12b1-py2.4.egg/trac/wiki/formatter.py"", line 1494, in format_to_html
  return HtmlFormatter(env, context, wikidom).generate(escape_newlines)
File ""/usr/lib/python2.4/site-packages/Trac-0.12b1-py2.4.egg/trac/wiki/formatter.py"", line 1449, in generate
  escape_newlines)
File ""/usr/lib/python2.4/site-packages/Trac-0.12b1-py2.4.egg/trac/wiki/formatter.py"", line 1191, in format
  self.handle_code_block(line, block_start_match)
File ""/usr/lib/python2.4/site-packages/Trac-0.12b1-py2.4.egg/trac/wiki/formatter.py"", line 1086, in handle_code_block
  processed = self.code_processor.process(code_text)
File ""/usr/lib/python2.4/site-packages/Trac-0.12b1-py2.4.egg/trac/wiki/formatter.py"", line 304, in process
  text = self.processor(text)
File ""/usr/lib/python2.4/site-packages/Trac-0.12b1-py2.4.egg/trac/wiki/formatter.py"", line 291, in _macro_processor
  text)
File ""build/bdist.linux-i686/egg/tracmath/tracmath.py"", line 89, in expand_macroFile ""build/bdist.linux-i686/egg/tracmath/tracmath.py"", line 153, in _internal_renderFile ""/usr/lib/python2.4/subprocess.py"", line 550, in __init__
  errread, errwrite)
File ""/usr/lib/python2.4/subprocess.py"", line 996, in _execute_child
  raise child_exception

}}}

how can I solve the problem?

regards"	defect	closed	normal	TracMathPlugin	normal	fixed	TypeError: execv()		0.12