Ge Nautilus

GE Nautilus Dishwasher hooked up to garbage disposer which I had to replace. I replaced disposal and now the dishwasher is not draining, lots of standing water in bottom of dishwasher. I can hear drain pump running. It was draining just fine prior to installation of new disposal. What could be wrong? Help!

Well, as suspected, there is drain plug in the disposer which we should have knocked out prior to attaching the drain hose from the dishwasher. An easy fix. Thanks for looking. PS: Love those installation instructions.