Are you destroying and recreating a GUI Object in the same function call? I suspect there's a script causing it so you might want to investigate. I.e:
PHP Code:
//#CLIENTSIDE
function onPlayerEnters() {
if (isObject("World")) World.destroy();
new GuiControl("World") {
somevar = true;
}
}
The others experiencing the error are on UN I believe (c/d?), and their NC is just so cluttered that tracing the problem them would take ages.
I believe the problem is fixed in V6 though.