Launcher works when installing, not ever again.

When I run the Installer from my downloads screen, it installs, starts the Launcher, and I can run Minecraft. When I double click on the Launcher, nothing happens. Reinstalling every time is an OK work around, but seems kinda stupid. Am I trying to start it from the wrong place?

I'm assuming the Launcher is the most recent version given, but I can't find a version number on my properties menu.