I am simply trying to get the sample PopUp app to work..
I get the error attached, which appears to occur when Register Terminal is called

What could be causing this?

I have tested the login details and IP address used using the Dashboard and with that I am able to
START APPL SESSION
GET DEV ID
START MONITORS
REGISTER TERMINAL (works with Media Control:No Media and in all dependency modes)

Can a softphone be done in C# using DMCC?