Why won't my windows media player play my videos?

Windows Media Center won't Play MSN Video Player

• My install of Windows Media Center won't play MSN Video Player videos. They appear in the main guide, but when I click on them, nothing happens. If I look on the main menu, I don't have any icons for MSN Video player there. People have suggested I try downloading updates, but that makes no difference. I have internet connectivity. My region is set to the UK (which is where I am). If I navigate to the MSN Video Player using Internet Explorer, the videos play fine. The machine is an Acer Revo RL100, running Windows 7 64-bit. Does anyone have a solution for this? Any help would be gratefully received.

• Answer:

  I had some luck with this. The ProgramData\Microsoft\eHome directory (or equivalent on your version of Windows) contains a file called mcepg1-5.0.db, which looks to me like it stores all of the configuration for Windows Media Center. I took a backup of this file, then removed it. When I started WMC again, the MSN Video Player option had reappeared on the menu. I was then able to set up Internet TV with no problems.