We've been using your control for several years without any major issues. One outside server that we communicate with just had a server upgrade yesterday and as a result we can no longer connect with the SecureFTP control. The same credentials that we've always used do work in a client app like Filezilla, but we get this error from the control:
CONNECT UNSUCCESSFUL. EXCEPTION=Control channel unexpectedly closed ('' read so far)
We're working with the company that we are trying to connect to right now to try to further trouble shoot it. I'm wondering if there are any suggestions you might have in the connection properties to resolve it.