Next you could try our new version 6 beta from
http://www.superflexible.com/downloadmore.htm.
Again you need to try all three FTP libraries.
If problems remain, we need to look into it with Internet Protocol logs.
The logs can be turned on with the checkmark "Internet Protocol Logging" on the Program Settings dialog, tab sheet Logs.
There will be several files whose names start with FTPLOG in the TEMP folder. You can get to the TEMP folder by entering %TEMP% in the address bar of Windows Explorer.
Create these logs with an FTP library that runs fairly well except for the upload.
If you could send those to
info@superflexible.com as well as the normal log, I can find out why this happens. The logs should not contain any private information but please take a look (especially look for your password). If they are large, you may want to zip them.
Kind Regards,
Tobias Giesen