Unfortunately the dropped packet message might be a red herring here. What that message is saying is that the firewall received a reset for a connection that does not exist in the firewall state table. What might have happened is the firewall recieved two reset packets, the first one closing the connection and removing it from the state table, then the second one coming in and triggering this message.
I think taking a look at audit and tcpdumps with Support might be your best bet. There should be no reason that "Any v4" does not work, while specific objects for source/dest work just fine.