abrt version: 1.1.18
architecture: i686
cmdline: /usr/bin/python /usr/bin/picard
component: picard
executable: /usr/bin/picard
kernel: 2.6.35.14-96.fc14.i686.PAE
package: picard-0.15.1-1.fc14
reason: script.py:310:func_num:ValueError: invalid literal for int() with base 10: '.2'
release: Fedora release 14 (Laughlin)
How to reproduce: Trying to change how files are named from tags ("file naming"), under options.  I was typing in different values and got this crash report (though the prog is still running).
time: 1318281551
uid: 500

backtrace
-----
script.py:310:func_num:ValueError: invalid literal for int() with base 10: '.2'

Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/picard/ui/options/renaming.py", line 71, in check_formats
    self.update_examples()
  File "/usr/lib/python2.7/site-packages/picard/ui/options/renaming.py", line 98, in update_examples
    example1 = self._example_to_filename(self.example_1())
  File "/usr/lib/python2.7/site-packages/picard/ui/options/renaming.py", line 89, in _example_to_filename
    filename = file._make_filename(file.filename, file.metadata, settings)
  File "/usr/lib/python2.7/site-packages/picard/file.py", line 234, in _make_filename
    new_filename = self._script_to_filename(format, metadata, settings)
  File "/usr/lib/python2.7/site-packages/picard/file.py", line 207, in _script_to_filename
    filename = ScriptParser().eval(format, metadata, self)
  File "/usr/lib/python2.7/site-packages/picard/script.py", line 237, in eval
    return ScriptParser._cache[key].eval(self)
  File "/usr/lib/python2.7/site-packages/picard/script.py", line 80, in eval
    result.append(item.eval(state))
  File "/usr/lib/python2.7/site-packages/picard/script.py", line 70, in eval
    return function(parser, *args)
  File "/usr/lib/python2.7/site-packages/picard/script.py", line 310, in func_num
    format = "%%0%dd" % int(length)
ValueError: invalid literal for int() with base 10: '.2'

Local variables in innermost frame:
text: '7'
length: u'.2'
parser: <picard.script.ScriptParser object at 0x8831cac>