XCode Build and Run

I recently reinstalled OSX, and am having a slight annoyance with XCode. Before I reinstalled, I could 开发者_如何学JAVAjust hit CMD + Enter, and it would build, then flip the main editor screen to the debugger, where it would show NSLogs, crashes, etc. Now, when I hit CMD + Enter, it just runs the app and stays in the code editor screen. Is there an option I'm missing? I've scoured the preferences, and can't seem to find anything.

Go to Preferences > Debugging and check the "On Start" drop down.