Windows Media Center has stopped working

Windows 7 x64
Windows Media Center

Problem
When you attempt to start Windows Media Center (WMC) it immediately crashes and a dialog remains with "Windows Media Center has stopped working.

Solution
WMC uses a database file during launch.  If this gets corrupted it can cause the launch failure.

Delete/rename C:\ProgramData\Microsoft\ehome\*.db

Restart WMC.