SFTP Problem - Can't connect
 

I've read on the forum that some people have been able to connect to their tablet via SFTP when they have openSSH installed. I have openSSH installed on my 770. When I try to connect and log in it asks for my password, I type it in, and then it errors with "Request for subsystem 'sftp' failed on channel 0", "Connection closed". Does anyone know what could be causing this problem?