I have 2 tivos a series 2 and a series 3. about 3 days ago they stopped transferring shows between them. they see each other and my pc, I can transfer from tivo to pc, but not from pc to tivo or tivo to tivo. It puts it on the to do list but never transfers. I've reinstalled tivo desktop, reset the pc and both tivos, and my modem & router. I've also cleared the tivo cache files. What can I do next?