[PyMOL] Error report when I saved image

[yunbo.song]

Hi, all,

I got the Error feed back when I saved image using Pymol. My Operations system: 
Windows2000.
What's wrong here? thanks in advance!!  error report is in the following.

yunbo
Apr23

Error:1
UnicodeEncodeError exception in Tk callbacke 
  Function:<bound method Normal.file_savepng of <pmg_tk.skins.normal.Normal 
instance at 0x03165738>> (type:<'instancementhod">) Args:()
Traceback (innermost last):
File"nicodeEncodeError Exception in Tk callback
 Function: <bound method Normal.file_savepng of <pmg_tk.skins.normal.Normal ins
ance at 0x03165738>> (type: <type 'instancemethod'>)
 Args: ()
raceback (innermost last):
 File "D:\Program Files\DeLano 
Scientific\PyMOL/modules\Pmw\Pmw_1_2\lib\PmwBase.py", line 1747, in __call__
   return apply(self.func, args)
 File "D:\Program Files\DeLano 
Scientific\PyMOL/modules\pmg_tk\skins\normal\__init__.py", line 581, in 
file_savepng
   self.cmd.png(sfile)
 File "D:\Program Files\DeLano Scientific\PyMOL/modules\pymol\exporting.py", 
line 97, in png
   r = cmd._do("cmd._png('"+str(filename)+"')")
nicodeEncodeError: 'ascii' codec can't encode characters in position 34-35: 
ordinal not in range(128)