Yeongam track graphics

Long time GP4 user and just setup the system again after many years in mothballs (my attic). Part of my process is adding some of the new tracks to the program after having run the original 17 hundreds of times. Some of the new tracks are fabulous and one of the best is the 2011 Yeongam circuit V2.1 by KTC. However, it has a weird quirk in the the graphics of the skyline are skewed and keep changing to a series of blue and gray squares as the game runs. The rest of the track runs great. I have an HP PC w/AMD Athlon 64X2 Dual Core, 2 GIG Ram and nVideo GForce 8400GS card. I am running with all the game patches up to and including GPX. Any thoughts?

I stand corrected. It is the Fuji track out of the 2008 that is giving problems. The Yeongam track is working fine.