We had this problem.

In our case, DNS was not resolving the ADSM Server machine name as specified in 
the dsm.opt file.

Check this by issuing a PING command from your client to the server to check 
the network connectivity between the machines.

Regards

Phil

Phil Chissell       phil.chissell AT research.natpower.co DOT uk

This represents the view of the author alone and is not to be
considered as the position of National Power PLC