Importing House from Max to Cry

During my exercise in importing the Max file to Cry, I was kept on getting the same error messages when trying to do the Import.

This was the error message I was shown.

This was asked to Vinh via email and the solution this error was quite simple.

As quoted from Vinh, "That error is common. It means that some of the triangles in your model are made of 4 vertices, not 3.

It will be on the parts of the model that you have not yet "reconstructed". Try to remove any of the old parts from the mesh that you are exporting. Only export remodelled parts."

So complicated trying to handle both programs!