trickster will work but this wont

for some reason i can play trickster but when i try grand chase i press start and it ses theres a gameguard error

now it wont work and doesnt give the the error message

i got past that but now it sais error72 game mon problem restart i do and it still happens

THIS IS A TECHNICAL PROBLEM, NOT A BUT, PLEASE POST IT IN THE CORRECT AREA..

 

ALSO, USE THE SEARCH BUTTON, THERE HAVE BEEN MANY SOLUTIONS TO ERROR 72, ALL YOU HAVE TO DO IS OPEN YOUR EYES