No graphics appear with error "'ffmedit.exe' is not recognized as an internal or external command"

Hi,

I compiled with the v4.13, which resulted in a correct output but no graphics. There was an error that said “‘ffmedit.exe’ is not recognized as an internal or external command, operable program or batch file.” Both ‘ffmedit.exe’ and “ffglut.exe” are in the same directory of FreeFem++.exe. Does anyone know how to solve this?

Regards