If you are seeing this error, please try the following points:
- Make sure your FTP credentials are correct.
- Try setting 'Active' and 'Passive' modes and run a test deploy to see if it works.
- Decrease number of concurrent connections to 5 or 3.
- Set up path from absolute (/trunk) to a folder containing small amount of files (like /trunk/folder).
If deploy still fails, please email us at email@example.com