That depends, you still failed to mention what code you are trying to install. There is both device code and smart app code in this thread. If you are installing the device code then Taco’s post (starting this thread) is pretty detailed so if you follow it you should get it installed correctly. If you are trying to install the smart app then I don’t know what your issue is. If you point us to the code you are trying to install it would make solving your issue much easier.
Here is an other good thread that will help you install.