I flew a short flight Newark to Washington-Dulles & when I landed, this happened. My gear vanished into the runway. This is a FS2000 model, but i was using FS2002. Project Freeware 737-300. Never had problems before.

Did you land hard? That looks a lot how FS will model crashes, particularly on models that don't have crash effects.-Rob

No, it was actually one of my better landings. I kept going down, down, down... you get the picture. I was still able to taxi and move around, just half sunk into the ground.