I'm a new TiVo user and installed Tivo Central 2.5 on my notebook with no problem. I also installed TiVo Central on one of my home desktop workstations. On the desktop, the TiVo Server wouldn't load.
After reading posts and isolating the problem, I realized that the MSN parental controls installed on the desktop were preventing the TiVo from communicating with the desktop PC. I turned off MSN parental controls and all worked fine.