Sir,
I am also getting the same error
Registration Process Error
could not launch Label Left Hemisphere Surface
please check that the executable /home/alphin/Downloads/BrainSuite19a/svreg/bin/svreg_label_surf_hemi.sh exists and that /home/alphin/Downloads is a valid directory.
Please see log window for process output
I selected the SVReg directory and still facing the same issue.