Problem with easy-C

When I download a code, something in the program (the one on the computer, not the robot) gets messed-up. If I try to load another code to the robot without using the CD to re-install easy-C, it will say “The build failed” or something like that in the build window. I don’t have a clue what is going on.:confused: I have The first easy-C and a updated intellect loader.