Passing generic event to Guava EventBus?

I've become very fond of Google Gauva's EventBus, so much that I want to include it in one of my Swing GridBagBuilder API's. The goal is to take a Swing component and do something with it in an arbitrary event, and subscribe this to an EventBus. The problem is I think the reflection operations done by the EventBus are not liking my generics for any arbitrary event type.

Essentially, the method accepts a BiConsumer where C is a Swing Component and E is an arbitrary event type to subscribe to EventBus.

public <E> void subscribe(EventBus eventBus, BiConsumer<C,E> consumer) { 
    eventBus.register(new Object() { 
        @Subscribe
        public void processEvent(E event) { 
            try { 
            consumer.accept(comp, event);
            } catch (Exception e) { 
                e.printStackTrace();
            }
        }
   });
}

The event bus seems to be working but I keep getting bizarre ClassCastException errors. Is there any way I can make this work? Or is what I'm trying to achieve a lost cause?