This is the communication I get on Matlab when I start the second-level analyses on Conn. It doesn't let me continue with the analyses. Could you please help me solve the issue?

Step 1/1: Functional data second-level analyses
ERROR DESCRIPTION:
 
Error using spm_slice_vol (line 32)
spm_slice_vol.c not compiled - see Makefile

Error in spm_read_vols (line 34)
 Y(:,:,p,i) = spm_slice_vol(V(i),spm_matrix([0 0 p]),V(i).dim(1:2),0);

Error in conn_process (line 4877)
 b=b+spm_read_vols(a)*cconditions(n2,n0);

Error in conn_process (line 99)
 case 'results_voxel', [varargout{1:nargout}]=conn_process(16,varargin{:});

Error in conn (line 12639)
 else conn_process('results_voxel','dosingle','seed-to-voxel');

Error in conn (line 11720)