VS 2010 FTP Error - Cannot Send Content Body With This Verb-type

I have some code which I had working fine as below but now for some reason it throws the error "Cannot send a content-body with this verb-type".

Code:
try {
String destinationPath = ConfigurationManager.AppSettings["HostedPath"].ToString();
String sourcePath = ConfigurationManager.AppSettings["InternalPath"].ToString();
String destinationFolder = destinationPath + "/" + vendor;
String sourceFolder = sourcePath;

[Code] ....

Now I googled the error and found replies as below and changed the request stream lines in the above to the commented out response streams, this no longer throws the error but now no longer copies the file to the ftp site?

[URL] ....