Can not open Sketch


I have been trying to open sketch for last 5 days. I have been getting same error when I try to open new sketch or which I have already made before. I have already reinstall Arduino 3 times.

I am using Windows 8 OS.Please Help me with this.


Did you re-install Processing as the error box recommends? (See:

Is your sketch named with the old .pde (Processing) extension or the new .ino (Arduino) extension?