FTP Publishing Error on Mac

I am a new user of Mac and RapidWeaver. I have to stop working with my Windows/Flash Based websites and rewrite them due to inaccessibility to iPhone and iPad. I have already been through the checklist, I deleted the cache, and I am still stuck with the attached error below stating that
FTP Publishing Error. I have done everything that I could possibly do, but I still get the same message. I am not so familiar with RapidWeaver and Stacks. And as much as I would like to be more knowledgeable about it, I could not continue unless this error is not yet resolve.
Can someone please send me some help?

FTP Publishing Error
Failed to create remote directory 'files/
jquery-1.4.1.min.js'
