Put the summary of the bug you're having here

What I expected to happen was...:
I thought the Minecraft launcher should have started up normally.

What actually happened was...:
For some reason the Minecraft launcher did not work properly. There was no version i could select and the ''play'' button didn't work. At first it said ''ready to play Minecraft version 1.6.4'', then the second time it said ''loading versions...''.

Steps to Reproduce:
1. Just start the launcher and it happens.
2. ...
3. ...