I purchased a new Roamio Pro system a few days ago and it's basically been working well, but I can't get it to share shows with my Mac over my network. I have Roxio Toast 11 Titanium software and have been using the included utilities Mac2TiVo and TiVo Transfer to transfer video files between my Mac and my old TiVo Series 3 HD unit. Unfortunately, this doesn't seem to work with the Roamio. I have Mac2TiVo running on my Mac Pro, and it is currently sharing several files which worked fine on the old TiVo Series 3. To attempt to access these files on the Roamio, I go to "My Shows". I see "Mac Pro (DVR)" at the bottom of the source list, with an exclamation mark icon. However, when I select that, I just get a screen with the message "The Mac Pro PC's Now Playing List could not be displayed because it is unavailable. Press LEFT to return to the My Shows List." When I try to go the other way using the TiVo Transfer program on my Mac, it does not see my new Roamio on the network at all. I've verified that the media key is still correct. Both my Mac and the TiVo Roamio are connected by Ethernet to the same router, so it seems like they should be able to communicate fine. I've verified that I can "ping" my Roamio's IP address from my Mac. The TiVo network diagnostics show that my Roamio is connecting to the Internet fine. My Mac is also having no problems connecting to the Internet. I've tried resetting both my TiVo Roamio and my Mac but that made no difference. Is this a compatibility issue? I've noticed that on the TiVo help pages, the Roamio is not listed as a model compatible with TiVo desktop or the Roxio software, but I don't know if that's because it genuinely isn't compatible or if the pages just haven't been updated yet. Being able to transfer videos from my Mac to my TiVo is extremely valuable for me. If this is something that is supposed to work, then I'd greatly appreciate any advice or help.