Don't know if your contours are appearing correctly, but if not, there's one more thing to try. We have seen this before with ATI Radeon video cards, there's a setting in FEMAP that can correct this problem, go to File - Preferences on the menu. Choose the "Render" tab. In the "Textures" box, reduce the "Max Size" to "512" and see if the contour appears correct. In order to get the best display possible, increase the "Max Size" as high as you can while still getting a good contour display.