maple story doesnt work i need help

when i start up maplestory after i get to the wizet screen but before i get to the login screen it freezez then closes and says: error failed to initialize nProtect Cryptkey (0)

p.s. it used to work till my friend deleted it so i reinstalled and then it was fine for a while until now


please help

It seems like a GameGuard thing, have you tried deleting and letting GameGuard redownload?