error 182 in module 1 - nettypework

When i use nettype=tcp the server starts ok ! But i need to start two services for Navision in English (C/SIDE) and Navision in Portugues (SQL 2000) on the same machine. When starting service server in DOS on a Win2000 PC, the following error comes up: Internal error 182 in module 1. The setting for networktype is netb. What is causing this error? How can i resolve this?

The netbios net library fails in some versions of Financials and Attain. Upgrade to the latest version - or use TCP. Rgds - Jens