Telnet connection problem in DCC Error 10057 in function Send Socket is not connected

I am unable to telnet to my duo, getting error message:

"Error 10057 in function Send
Socket is not connected."

I had set everything up fine just a few weeks ago - setting a password via telnet when there was none by default on the duo, and moving a CCcam line and picons to the box ok.

I have had the box disconnected for some time and now it wont connect at all, just giving the above message.
does anybody have any advice where I should start in order to sort this out ?

I am using dcc E2 v1.50
any help much appreciated

Quote from master G

The ip address has probably changed, press search button in DCC to scan the network..

If you want a static ip address disable DHCP in network settings..

Thanks master G - this sorted it..........and I am suitably embarrassed