What is the source of this error? Is there an issue with supporting the rename/move in a single call?
about 3 years ago
spinkb @ Fri Mar 14 16:17:29 EET 2014 Your rename destination appears to be invalid.
You can rename from one folder to another...if the folders are on the same drive.
You also need to be careful on your path. Starting your path with "//" immediately indicates you have a typo as a FTP path will never have a double slash.
It also appears the destination you specified likely doesn't exist. Check the FTP path your specifying to make sure its valid...from your heavily edited log snippet its hard to say, but it looks highly likely the path forgot the first folder.