Crash when saving: cannot find save.data

Whyteboard 0.41.2
Operating System: Windows XP (build 2600, Service Pack 3)
System Lanauge: English
Screen Resolution: 1280x1024
Python Version: 2.6.4 (r264:75708, Oct 26 2009, 08:23:19) [MSC v.1500 32 bit (Intel)]
wxPython Version: 2.8.10.1 (msw-unicode)
wxPython Info: (__WXMSW__, wxMSW, unicode, wx-assertions-on, SWIG-1.3.29)
Python Encoding: Default=utf-8 File=mbcs
wxPython Encoding: utf-8
System Architecture: 32bit x86
Frozen: False

  File "E:\Downloads\whyteboard\whyteboard\gui\frame.py", line 251, in on_save
    self.on_save_as()
  File "E:\Downloads\whyteboard\whyteboard\gui\frame.py", line 275, in on_save_as
    self.on_save()
  File "E:\Downloads\whyteboard\whyteboard\gui\frame.py", line 253, in on_save
    self.util.save_file()
  File "E:\Downloads\whyteboard\whyteboard\misc\utility.py", line 150, in save_file
    self.write_save_file(save, version)
  File "E:\Downloads\whyteboard\whyteboard\misc\utility.py", line 180, in write_save_file
    _zip.write("save.data")
  File "C:\Python26\lib\zipfile.py", line 1004, in write
    st = os.stat(filename)
WindowsError: [Error 2] The system cannot find the file specified: 'save.data'