Tonight I went to use one of my HD's to pull some programming off of PyTivo, and the Tivo couldn't see the PyTivo server. Rebooting didn't seem to clear it. It couldn't see my other Tivo for MRV either.
The IP address was good and the Tivo was pingable from other computers. The PyTivo server even showed the Tivo querying it.
I found the 'Enable Home Network Applications' to be turned off, so I turned it on and both the PyTivo server and the MRV showed up in Now Playing.
I'm wondering if it's a coincidence? Does the 'Enable Home Network Applications' setting need to be enabled to use PyTivo? To use MRV? If so, any ideas on how the setting turned itself off on it's own?