For debugging:
- Reset the default anatomy: it looks like you've edited it a lot and you might have been damaging something. Right-click on the Default anatomy folder > Use template > MNI > ICBM152
- To modify it: create a new subject, using "Default anatomy: No", and then set the ICBM152 template for it as well (Right-click on the subject folder > Use template > MNI > ICBM152) - Use this as your sandbox.
- Import your data, set your electrodes positions
- Make screen captures and post them here: one with head + inner skull in red + outer skull + cortex that you want to use for the computation, one with semi-transparent head + sensors
- Immediately after you get your OpenMEEG error: zip the contents of the $HOME/.brainstorm/tmp folder, upload it somewhere (dropbox, google drive...) and post the download link here