Maybe the natives of frost nade, i think mercylezz add this natives on version 5.0.7..
P.S: wow i did it know that mercylezz update to 5.0.8a, if mercylezz want to continue updating the zp 5.0.8 maybe someone can unlocked this thread https://forums.alliedmods.net/showthread.php?t=164926 so people can report things or give suggestions...