RE: ERROR message 1st level ROI to ROI analysis

Dear CONN experts,

I have the same error. I analysed all the data without issues; then following some analyses I went back to the SETUP tab to define new ROIs. I process the new ROIs by pressing DONE and selecting "Do not overwrite". However, I get the same error (posted below) when processing the 1st-level. It seems more like a MATLAB error, rather than a CONN error.

I have tried to restart CONN, then MATLAB, then my computer but I still get the same error.

Any help would be appreciated.
Thanks!
Hilmar

Error:
ERROR DESCRIPTION:

[i]Error using matlab.graphics.primitive.Patch/set[/i]
[i]Error setting property 'FaceColor' of class 'Patch':[/i]
[i]Color value contains NaN, or element out of range 0.0 <= value <= 1.0[/i]
[i]Error in conn_timedwaitbar (line 60)[/i]
[i]set(findobj(b,'tag','patch'),'facecolor',(1-a)*[.2 .2 .8]+a*[.8 .8 .2]); %(1-a)*[5/6,2/6,1.5/6]+a*[1.5/6,5/6,2/6]);[/i]
[i]Error in conn_process>conn_waitbar (line 4884)[/i]
[i]else h=conn_timedwaitbar(varargin{:}); end[/i]
[i]Error in conn_process (line 3790)[/i]
[i]conn_waitbar(n/N,h,sprintf('Subject %d Condition %d',nsub,ncondition));[/i]
[i]Error in conn_process (line 42)[/i]
[i]case 'analyses_gui_seedandroi',disp(['CONN: RUNNING ANALYSIS STEP (ROI-to-ROI or seed-to-voxel analyses)']); conn_process([10,11,15],varargin{:});[/i]
[i]Error in conn (line 6559)[/i]
[i]else conn_process('analyses_gui_seedandroi',CONN_x.Analysis); ispending=false;[/i]
[i]Error in conn_menumanager (line 120)[/i]
[i]feval(CONN_MM.MENU{n0}.callback{n1}{1},CONN_MM.MENU{n0}.callback{n1}{2:end});[/i]
[i]CONN v.18.a[/i]
[i]SPM12 + Anatomy DEM FieldMap MEEGtools Masking cat12 suit[/i]
[i]Matlab v.2018a[/i]
[i]storage: 1346.4Gb available[/i]
[i]spm @ D:\MATLAB\MATLAB_toolboxes\spm12[/i]
[i]conn @ D:\MATLAB\MATLAB_toolboxes\conn18a[/i]