SecureFX 6 Why is not compatible with lower versions

[iterative]

SecureFX 6 Why is not compatible with lower versions？I have a server, SSH version 2.0, with SecureFX 3 can be connected, but it would not work with SecureFX 6, suggesting that the connection is closed

[rtb]

Hi iterative,

I am sorry to hear that you are having problems with SecureFX 6.x.

Without logs of the connections, it will be hard to say what might be happening.

Would you send a successful SecureFX 3.x log and a failed SecureFX 6.x log as attached files to support@vandyke.com with a subject of Attn: Todd - Forum Thread 4800.