abrt 1.1.1 detected a crash.

architecture: x86_64
cmdline: /usr/bin/python /usr/bin/picard
component: picard
executable: /usr/bin/picard
kernel: 2.6.32.16-150.fc12.x86_64
package: picard-0.12.1-1.fc12
reason: script.py:70:eval:TypeError: func_lower() takes exactly 2 arguments (4 given)
release: Fedora release 12 (Constantine)

backtrace
-----
script.py:70:eval:TypeError: func_lower() takes exactly 2 arguments (4 given)

Traceback (most recent call last):
  File "/usr/lib64/python2.6/site-packages/picard/ui/options/renaming.py", line 71, in check_formats
    self.update_examples()
  File "/usr/lib64/python2.6/site-packages/picard/ui/options/renaming.py", line 97, in update_examples
    example1 = self._example_to_filename(self.example_1())
  File "/usr/lib64/python2.6/site-packages/picard/ui/options/renaming.py", line 89, in _example_to_filename
    filename = file._make_filename(file.filename, file.metadata, settings)
  File "/usr/lib64/python2.6/site-packages/picard/file.py", line 228, in _make_filename
    new_filename = self._script_to_filename(format, metadata, settings)
  File "/usr/lib64/python2.6/site-packages/picard/file.py", line 200, in _script_to_filename
    filename = ScriptParser().eval(format, metadata, self)
  File "/usr/lib64/python2.6/site-packages/picard/script.py", line 237, in eval
    return ScriptParser._cache[key].eval(self)
  File "/usr/lib64/python2.6/site-packages/picard/script.py", line 80, in eval
    result.append(item.eval(state))
  File "/usr/lib64/python2.6/site-packages/picard/script.py", line 70, in eval
    return function(parser, *args)
TypeError: func_lower() takes exactly 2 arguments (4 given)

Local variables in innermost frame:
function: <function func_lower at 0x7f6b580507d0>
eval_args: True
self: <ScriptFunction $lower([[<ScriptFunction $if2([[<ScriptVariable %albumartist%>], [<ScriptVariable %artist%>]])>, u'/', <ScriptVariable %album%>, u'/', <ScriptFunction $num([[<ScriptVariable %tracknumber%>], [u'2']])>, u' ', <ScriptVariable %title%>], [u' '], [u'_']])>
args: [u'The Beatles/Help!/07 Ticket to Ride', u' ', u'_']
parser: <picard.script.ScriptParser object at 0x1da1750>
arg: [u'_']

How to reproduce
-----
1.updating directory/file path saving properties
2.
3.