Freezing

[Boomtown Rat]

     I've been having a problem lately, whenever I try to set up a flight in the flight planner between Sydney and Auckland (NZ) the game will freeze, either by me zooming in and clicking on Sydney after I clicked "Find Route" or whenever I click Navlog (nothing to do with zooming in.)

         Now mind you, this happens in the Flight Planner on the main menu, and only happens when I'm doing travel in Oceania.  I've never had a problem in Europe (where I've been flying.).  Any Help appreciated.

                                                         -Thanks in Advance,
                                                                            DF22