L2J Server

hi. this error repeat in console again and again...
what it is mean ? maybe some player do something ?

Java has pointers you just don't have to worry about them like you have in C++. In fact in Java almost everything is a pointer (only primitive types aren't).

A null pointer exception happens when you have a variable that asn't been assigned to a specific object yet.

sync issue?

sync issue?

what do you mean?

when building your core files you also need to update the db this is what he means

fixed in epilogue or so.