Hello,
It seems like you have 2 models in the same spot being displayed. Polysurface6 looks to be in triangles where PolySurface7 is a quad model? Was PolySurface6 the original and PolySurface7 was a duplicate? It looks like your model is being triangulated but the original geometry had flaws. This can happen if you are doing Modify and converting to polygons from nurbs or subdivision surfaces to polygons, with triangulate enabled instead of quads. If you did re-mesh or retopologize , this can also this if you do not have quads as the output geometry. Same with smoothing operations, so I would suggest that you check the tool settings before running the tool to make sure that quads is the output geometry; if that is what you need. Are you using quad draw? What other clues can you give to what you did before you noticed that the model's topology was messed up?
Good Luck!
