Since you have trouble with the file I have put up a zip file containing the properly named .py file extension. Unzip to your poser/runtime/python folder anywhere .

Another person had an issue with the rename because they had the default folder option set to "hide known file extensions" which conceals the actual file type .

Hope this solves the problem.

here the sharecg link for the script www.sharecg.com/v/27564/script/script-to-fix-file-paths