[Help] Closing windows to prevent stacking

Ok, so im about to release my FireballOS but i came into a problem… The file browser wont work right because it is stacking windows and wont open the desktop. In any case the question is. "is there a code that can shut a program down and start a different one after?"

You start the program from your OS, right? So when it quits, execution naturally returns to your OS. Do whatever you need to do to fix it then.

But thats the problem, it dosnt quit. If it quit that wouldn't be a problem. When i launch a program from that program its a file browser) it stays open in the background. And all the programs all together just stack until there is a error.

Just re-code the other program to exit correctly, then.