[Gmsh] extrude locally refined 2d mesh

[David Eržen]

Hello,

I would like to extrude a locally refined 2d mesh using this geo file

cl1 = 10;
cl2 = 1;
Point(1) = {0, 0, 0, cl1};
Point(2) = {100, 0, 0, cl1};
Point(3) = {100, 100, 0, cl1};
Point(4) = {0, 100, 0, cl1};
Point(5) = {30, 30, 0, cl2};
Point(6) = {100, 100, 1, cl1};
Point(7) = {0, 100, 1, cl1};

Line(1) = {1, 2};
Line(2) = {2, 3};
Line(3) = {3, 4};
Line(4) = {4, 1};

Line Loop(6) = {3, 4, 1, 2};
Plane Surface(6) = {6};
Point {5} In Surface {6};

Extrude {0,0,20} {
Surface{6}; Layers{ {1},{1} }; 
Recombine;
}


When I click 2D  or 3D buttons in mesh menu, I get errors.

Does anybody know the reason for this error? I searched the web 
unsuccesfully. :(

Best regards, 

David
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