Editing a maxsurf model (geometry)

Hi 

For modeling purpose , I always use Rhinoceros. I built this model in Rhino and exported to Maxsurf. Usually that always works. I check the model by checking the area of the model and also check the model in Maxsurf Stability in Body plan section (Show single hull section in Body plan). In both of the cases I saw the following error 

As you can see the error can be clearly seen. How do I correct the error inside maxsurf? I tried different ways of exporting the model from Maxsurf but the error is persistent.