There are at least two possible explanations that others have seen: 1. You just have a bad network - the TiVo is not good at recovering from some sorts of network errors. 2. Some recorded programs have glitches in them and cannot be transferred from a TiVo by any mechanism. The TiVo needs to reconstruct the stream that it transfers to a non-identical device, and some glitches in some recordings cause the reconstruction to bomb. If your transfers are bombing at the same place on a recording, this is probably what's happening. If your TiVo disk is starting to go bad, this sort of error happens much more frequently. Note that interrupted transfers often require a TiVo reboot to clear out the partial transfered show - otherwise the TiVo keeps on trying to transfer the same show and bombing again.