error: "invalid point index in tri"

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AnatPaz
AnatPaz Posts: 4

When importing a mesh I received the following error: import failed: The VULCAN file Geo_401_DG3.00t could not be imported as a mesh: invalid point index in tri

I've imported other meshes for the same project and they were all fine. I've tried removing intersecting volumes and removing verticle edges - but the error remains. 

any ideas on what causes this and the best way to solve it?