The Name Service is a process that is used by Creo and invoked when Creo starts. It must be running as follows for the CADDS 5 converter to work successfully:

The Name Service starts at the beginning of the Creo session. It handles communication between the Creo application and other separate executables that the Creo application interacts with, such as the CADDS 5 converter. If the Name Service is not used during a session, it times out five minutes after the start of the session. If it times out, the Name Service must be manually restarted, or a fresh session must be started to successfully use the Creo Interface for CADDS 5.