FIX: Fix weird probe error when no seed is present
FIX: Fix weird probe error when no seed is present

matthieuheitz/TubeTK,sumedhasingla/TubeTK,thewtex/TubeTK,LucasGandel/TubeTK,thewtex/TubeTK,KitwareMedical/ITKTubeTK,KitwareMedical/TubeTK,KitwareMedical/TubeTK,LucasGandel/TubeTK,KitwareMedical/ITKTubeTK,aylward/ITKTubeTK,sumedhasingla/TubeTK,cdeepakroy/TubeTK,matthieuheitz/TubeTK,cdeepakroy/TubeTK,LucasGandel/TubeTK,aylward/ITKTubeTK,KitwareMedical/TubeTK,sumedhasingla/TubeTK,KitwareMedical/ITKTubeTK,aylward/ITKTubeTK,cdeepakroy/TubeTK,matthieuheitz/TubeTK,LucasGandel/TubeTK,cdeepakroy/TubeTK,thewtex/TubeTK,sumedhasingla/TubeTK,KitwareMedical/TubeTK,KitwareMedical/ITKTubeTK,matthieuheitz/TubeTK,thewtex/TubeTK,aylward/ITKTubeTK