Victoria,

That was the file I wanted to use - I also tried this 2D mesh in 3D space attached.  What is a type 15 entity and why did it cause an error?  The same error appeared to be in this .msh file as well.

As mentioned before, it may be possible to remove the "physical entity" things in gmsh to avoid the problem.

As for the type 15: If you open the mesh file, it has a section that looks like this:

$ELM
58
1 15 0 1 1 1
2 15 0 2 1 2
3 15 0 3 1 3
4 15 0 4 1 4
5 15 0 6 1 5
6 15 0 7 1 6
7 15 0 8 1 7
8 15 0 9 1 8
9 15 0 10 1 9
10 15 0 11 1 10
11 1 0 1 2 10 11
12 1 0 1 2 11 12
13 1 0 1 2 12 13
14 1 0 1 2 13 5
...

The first column is just a counter, the second column is the "type" of the object being described. 15 represents individual points, 1 are lines. The problem is with these 15s, for which we can't figure out what gmsh wants to tell us with these entries. I suspect that if you remove these 10 lines and reduce the 58 at the top to 48, that it might actually work. That could give you a way forward.

Best
 W.


--
------------------------------------------------------------------------
Wolfgang Bangerth          email:                 bange...@colostate.edu
                           www: http://www.math.colostate.edu/~bangerth/

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