Paired t-test in dpabi with demo data

Hi there,
When I do 1 sample or 2 sample t-tests in dpabi with demo data it works fine but when I try paired t-test it produces following error:
Error using  .*
Array dimensions must match for binary array op.

Error in y_GroupAnalysis_Image (line 58)
MaskData = any(DependentVolume,4) .* MaskData; % skip the voxels with all
zeros