Terrain.dll CTD with error msg....

Hi everyone.This started about 2 days ago with random terrain.dll crashes. Although, tonight I've noticed a pattern. I'm running the mission "Blind flight through the english channel" and the error happens just after you leave the shoreline, and get into the channel. I've tested this several times using different graphics settings. No luck. I'm running a clean install with no scenery add-ons. I have edited my FSX.cfg using the autogen tweak provided by the microsoft.com support site. That helped bump some FPS. My pagefile runs on a 10000 rpm Western Digital 120gb HD using 900 - 4000mb of space. I'm using the 91.47 nvidia drivers. DirectX 9.0c..I've been searching forums, including this one for the past few days and have had no luck resolving this problem. Any help is greatly appreciated. Thanks in advance!System specs:Amd Barton Athlon 2600+Nvidia 6600 GT 128mb1.5Gb Kingston RamBiostar M7VIG 400 MoboSoundBlaster Live!