It was not. Now I added with:
Needs["NDSolve`FEM`"]
and after a kernel restart I am getting /ToElementMesh is in RED color/:
In[71]:= em = ToElementMesh[taged]
During evaluation of In[71]:= TetGenLink`TetGenTetrahedralize::reterr
During evaluation of In[71]:= NDSolve`FEM`ToElementMesh::femtemnm
Out[71]= $Failed
The stack trace is in the attached file. I do not want a volume Mesh, because the .stl file is a 3D surface boundary, so I need a surface mesh to feed it to NDSolve.
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