When you use the Add/Remove Programs tool, the installed program box may display only a single text string, a large blank space before the installed programs, or other display problems.
Most likely, a programs uninstaller removed registry entries required by the Add/Remove Programs tool. You can reset these registry entries by opening a CMD prompt and typing:
If this doesn't fix the problem, see the registry entries at Q266668.
NOTE: Other Add/Remove Programs applet problems are documented at: