Ya do what the guy above said.. I did the same thing.. Disabled Opis and just installed The zanmap.
Actually I just deleted Opis..
That. As much as Opis would be helpful to me as a server admin when things start getting out of hand, its minimap is simply appalling, and everyone on my server hated it - not to mention its off waypoint system. I'm sorry - it's just no.
ZansMinimap remains my choice - however I am having an annoying "problem" with it, so to speak.
I have a volume wheel on my keyboard, and I'm noticing that with each click of the wheel, the mob radar on the minimap toggles on and off. Looks like some weird keybind conflict somewhere.
Keyboard's a Logitech G510 btw.