Error importing EEG data from MEG/EEG file

Bugs
1

I just started with Brainstorm. I have created a protocol and am trying to import my first dataset. It is a .fif file from an Electa MEG system. I am only interested in the EEG data that was collected with it for now.
I was told to tell you that the data is not Maxfiltered.

This is the error message I get :

BST> Error: Could not find measurement data: 
Reference to non-existent field 'FIFF_PROJ_ID'.

	99 coil definition templates available
	0 MEG coil definitions and 0 EEG electrodes set up

***************************************************************************
** Error: Line 56: Index exceeds the number of array elements (0).
** 
** Call stack:
** >panel_import_data.m>CreatePanel at 56
** >panel_import_data.m at 30
** >gui_show_dialog.m at 51
** >in_data.m at 122
** >import_data.m at 200
** >bst_call.m at 28
** >tree_callbacks.m>@(h,ev)bst_call(@import_data,[],[],[],iStudy,iSubject) at 653
** 
***************************************************************************

Any help is much appreciated!
Thanks!

2

I just started with Brainstorm

I'd recommend you start by following all the introduction tutorials using the example datasets, before trying to process your own data:
https://neuroimage.usc.edu/brainstorm/Tutorials

I was told to tell you that the data is not Maxfiltered.

If there is active shielding used in your MEG system, you may need to use MaxFilter.

BST> Error: Could not find measurement data: 
Reference to non-existent field 'FIFF_PROJ_ID'.

This is seems to indicates you have multiple versions of the MNE-matlab toolbox in your MATLAB path. This error occurs here:

If it works until line 152, it means that the other fields of the FIFF structure are correctly defined - this is done in this function:

Try the following:

  • Remove from the Matlab path ALL the folders that are not strictly related to your Matlab installation. Restart Matlab, do not add the brainstorm3 folder to the path, just start brainstorm.m (same thing for all the Matlab-based programs you might be using - never add them to the path)
  • Delete the brainstorm3 folder, download a new one from the Brainstorm website