Error running "debug version" of my game

Why does this come up and how do I fix it when I run my debug game app on OS X?

"The global shader cache file ‘/Users/Shared/UnrealEngine/4.7/Engine/GlobalShaderCache-GLSL_150_MAC.bin’ is missing.

You’re running a version of the application built to load COOKED content only, however no COOKED content was found. Consider cooking content for this build, or build and run the UNCOOKED version of the application instead."

Try launching the executable with the -game flag: Command-Line Arguments | Unreal Engine Documentation