This is Karelle from the Echelon Tech Support team. What color is the License bar at the bottom left of the LonMaker Design Manager?
It should be green if LonMaker has been successfully activated.
If so, confirm that the template is LonWorksMetric in the New Network Options tab in the LonMaker Design Manager and try creating a new network. Does the error still occurs?
If so, please open a COMMAND prompt and type:
Make a screen shot.
Then run the LonMaker Activation wizard again and create a new order form.
Send me the screen shot along with the order form. For confidentiality reasons (the form will include your serial number), I recommend you contact me via our support portal at www.echelon.com/support and open a new support ticket with the requested information.