Dear experts,

I am a begginer with the conn toolbox, I have preprocess all the data and run setup and denoising steps without errors but when I try to do first level analyses this message appears:

ERROR DESCRIPTION:

Error using mat2file
Cant get 'fname'.
Error in file_array/subsasgn>subfun (line 132)
mat2file(sobj,dat,va{:});
Error in file_array/subsasgn (line 70)
subfun(sobj,double(dat),args{:});
Error in spm_write_plane (line 33)
V.private.dat = subsasgn(V.private.dat,S,dat);
Error in conn_process (line 1718)
SEout=spm_write_plane(SEout,t,slice);
Error in conn_process (line 25)
case 'analyses_gui_seed',disp(['CONN: RUNNING ANALYSIS STEP (ROI-to-ROI or seed-to-voxel analyses)']); conn_process([10:12,15],CONN_x.Analysis);
Error in conn (line 3687)
conn_process('analyses_gui_seed',CONN_x.Analysis);
Error in conn_menumanager (line 109)
feval(CONN_MM.MENU{n0}.callback{n1}{1},CONN_MM.MENU{n0}.callback{n1}{2:end});


Any suggestion?

Thank you in advance,
Best regards,

Olaia