hey i had the same issue and a user called bobmanguy334 linked me to this - http://mlbs.slipcor.net/ - you just have to run it with java and that should get rid of the ore.. i haven't had chance to try it yet but i probably will tonight.
if you give it ago these we the instructions i got - Right click it, select "Open With..." and select Java(TM) Platform SE Binary
good luck