[Prozac]

the actual npc was 400 lines of code ... but anyways
the window was activated and closed by a keypressed (detect keycode) query.
even by closing the window with the red X in the upper right corner it still caused the client.variable to not be readable until you reconnected to the server with the gui window having the destroyonhide=true in there.
all i did was make it destroyonhide=false and that fixed it.
it's just odd that a window property would cause a client.variable read error and not report it as an error. it just quietly ignores you.