using ctffind4 with relion1.4

Dear Alexis,

Do I have to include "/lmb/home/tmartin/programs/ctffind-4.0.9-linux64/ctffind --omp-num-threads 1 --old-school-input" in relion1.4 gui to run the ctffind4 or is it meant only for compatibility with relion1.3?

Thanks.

Regards,
Shabih