Chameleon Submitter

I am trying to duplicate a free site, and after i press Start Duplication Error it gives me this error:
Cannot open file!
OK
File Naming is index.html
and Folder Naming is $$cat$$name
What should i do?
Thank you

Please make sure that you do not have the file you want to duplicate (entered in the Page to Duplicate field) open in some other editor when trying to duplicate it.