The entity wouldn't have a global pointer then.
=> the entity isn't created on a client that connects after the entity was created. Additionally you can't use the functions enet_send_skills/_flags/_pos/_ang and enet_ent_remove.

@zStream: Ok then this is a bug because this shouldn't cause a crash.
[EDIT] If I'm passing NULL instead of the funcname I get no error. Can you post me your privious code that caused the crash , please?