NWDI server: Change of IP-address results in error during Dev. Config. saving

Hi experts,

We had to move our NWDI-server physically and received a new IP-address. Unfortunately we now get an error during saving of the development configuration in CM Services:

The ip address shown in the error message is still the old one although we have changed the IP-address in the dev. configuration already to the new one.

Any ideas?

Thanks and Best Regards

Harald