FEM-meshing and FEM head model

Regarding your example dataset:

  • I downloaded the file on a Windows 10 laptop (using the iso2mesh package downloaded automatically by Brainstorm),
  • loaded it with the menu File > Load protocol > Load from zip file
  • right-clicked on the subject > Generate FEM mesh > Iso2mesh > MergeMesh > Default settings
  • it takes about 5 seconds to create a FEM mesh file with 14254 nodes
    image

If this does not work on your mac, there is maybe something wrong with iso2mesh on MacOS?
I'll ask the iso2mesh developers if there is any reason for this difference.

@MartinC Could you quickly check if it works on your Mac?
(I'll forward you the example file in a separate email)