Can't open Audacity

Im running window 7 64 bit and when i try to open Audacity it pulls up an error that says “the application was unable to start because its side-by-side configuration is incorrect” how can i fix this?

Which version of Audacity? See the pink panel at the top of this page.

If you don’t already have 2.0.5, please download it here:
Audacity ® | Download for Windows .

If the problem persists in 2.0.5, please try installing the Microsoft Visual C++ 2008 SP1 Redistributable Package (x64) from .