I've finally figured it out, but it's quirky as hell:
1) Start Mac2TIVO application
2) Make sure to have ONLY converted H.264 MP4 videos in folder. If you have a mix of video formats, regardless of the codec, hangs every time. I could only get it stable if everything was pre-converted to H.264 MP4 files only.
3) If you have more than 25 files, the app hangs (at least on my system). I played around with this and 25 works, 26 doesn't. Very strange. This is a "per folder" limit apparently. You can have multiple folders though...
4) On TIVO, start transfer. You can only do 1 at a time and queue 1 at a time. If you try anything more than 1, app hangs.
It also seems to me that some sort of TIVO conversion happens during the transfer because the process is a lot slower vs converting to TIVO format, then transferring. For example, using VisualHub to convert to TIVO format (~1 hour) then transfer file takes about 5 mintues. However, same file as MP4 takes little over an hour to transfer to TIVO.
Not sure if this helps any, but I had some time to experiment this weekend and like I said, it's quirky as hell but I finally got it to work. This entire process should be a no-brainer and right now it's a lot of work just to get it stable.
At this point, it's easier to switch to my xBox360 using Connect360 and stream direct to TV (no copy or conversion necessary).
QUOTE (bedelman @ Sep 19 2009, 07:33 PM)

OK -- did you try flipping the IP address setting as I indicated further up this thread? (with a few reboots in there as well)