Every time i log in to minecraft it says im in 1.6.4 and says i cant have join a server and i must get 1.6.2 to join please help!

Put the summary of the bug you're having here
cant join a server because it says you need 1.6.2 to join
What I expected to happen was...:
Describe what you thought should happen here
let me join a server
What actually happened was...:
Describe what happened here
cant join a server
Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...try to join a server and cant
3. ...