well i just tested on a clean version and the error went away, so I'm going to have to look at my customs src edits. Annoying part is that there was no warning or error on compile.
It seem to affect any npc that open a dialog when you get close to it.
example :
prontera,164,304,3 duplicate(ConMessenger) Continental Messenger#01 997,3,3
There a couple others in prontera that when you walk close, it stop you with a dialog.
This is why a plugin system for src would be awesome:) Hopefully i can figure out what went wrong thanks.