Hello!

I've had the same problem as you Sarah. 

ERROR DESCRIPTION:

Undefined function or method 'eq' for input arguments of type 'struct'.
Error in ==> conn_menumanager>@(x)any(x==varargin{1}) at 327
idx=find(cellfun(@(x)any(x==varargin{1}),CONN_MM.onregionhandle));
Error in ==> conn_menumanager at 327
idx=find(cellfun(@(x)any(x==varargin{1}),CONN_MM.onregionhandle));
Error in ==> conn_menu at 535
conn_menumanager('onregionremove',position.h5);
Error in ==> conn at 4872
conn_menu('update',CONN_h.menus.m_preproc_00{3},[]);
CONN v.18.a
SPM12 + Anatomy DEM FieldMap LI MEEGtools marsbar rwls suit vbm8
Matlab v.2009b
storage: 2690.0Gb available

Has anyone discovered what is the problem here. In my case I have been using SPM12 and CONN 18.a.