Render regions script no longer works

Hi guys. I was trying to use this script, http://wiki.blender.org/index.php/Extensions:2.5/Py/Scripts/Render/Render_Regions,but when I try to render, it says to me
Trackback (most recent calls last):
File “\render_render_regions”, line 216, in execute
UnicodeDecodeError: ‘ut8’ codec can’t decode byte 0xa8 in position 0: invalid start byte
location: <unknow location>:-1

Any ideas on how to fix this? I really needed this script to work=(

Maybe its a bug in Blender 2.60 as I cannot even access bpy.context.scenes.render. in 2.60 using Blender’s interactive console without it throwing encoding/decoding errors. You could make the following edits to the script and I’m guessing it should work as intended.

e.g.

Change line 216 from:

region_name = n_row + "_" + n_col + "_" + file_name + rnd.file_extension

to

region_name = n_row + "_" + n_col + "_" + file_name + <b>"." + rnd.file_format.lower()</b>

And do the same to line 302:

print("Saved "+dir_output + file_name+rnd.file_extension)

to

print("Saved "+dir_output + file_name + <b>"." + rnd.file_format.lower()</b>)

Thanks a lot mate, now the script works perfectly.!
Best wishes!