I recently downloaded and installed the update to the PMDG 747 product. Since then I have attempted to input a flight plan for the Level D 767 and I am getting no navdata msg when inputting a waypoint into the FDC. I have the same problem in all the PMDG products also. I have downloaded new nav data from NAVDATA.AT. I have attempted to remedy this problem through the PMDG forum unsuccesfully. Any help????

Are you using the LDS 767, or the older 767 PIC? While PMDG uses the same nav database as PIC, LDS' is completely separate.