I would think that also, but that did not work. Probably that is correct, but acording to OPPO:
Unfortuantely in both cases SMB will not work since the SMB sharing for both devices are not compatible with the SMB 2.0 implementation in our player.
What you will want to do is use a third party DLNA server such as Playback (http://www.yazsoft.com/products/playback/) on your Mac to take advantage of your network shares.
I got it, ran the free Demo and it worked perfectly right away. Price for a 3-License pack is $15. Well worth it for the frustration I've had trying to get this to work.
Perhaps Apple could, someday, provide a similar server built into an OS release.