We had one more thought about this. You take breed with beetles that are out on tasks, because they are not available in the nest. If you have juiced one of the only two *available* beetles, maybe you get into this situation. I tested for this. If there are fewer than 2 available beetles, you are not allowed onto the breeding screen. If there are only two available beetles (even though you have more in your collection), because some are out on tasks, the juice button is disabled. I think we've got all the cases covered. But if you found a way through this logic, let us know.