[RESOLVED] Windowskin help

[Rune]

I'm having a bit of trouble, I've implemented a windowskin changing system into my game, but when I go into a message window (e.g. chest, npc etc) it jumps to another windowskin, then, when the event is finished, it goes back to the windowskin I was using previously...
I've tried searching $data_system.windowskin_name, but the only things that involve that are in Game_System and the scene that you change the windowskin in... and I don't remember editing Window_Message or Game_System

Incase you need, I change the windowskin with $data_system.windowskin_name = "Windowskin name"
I've tried removing the skin, but it complains that it can't find the skin... same with removing the windowskin script...

What could I be doing wrong/not doing?

[EDIT]
Never mind... bloody AMS >.<