First, double check that the Visual Studio version that you have installed meets our minimum system requirements as documented via the link below. We currently only support the Visual Studio 2013 *editions*. And during the installation, make sure to check-on/include “Windows Phone” and “Silverlight” if those options are available (it defers between editions). You can’t build WP8 Silverlight apps without them. You can verify this by going to the “Uninstall Programs” window, selecting Visual Studio 2013 from the list, and then clicking “Modify”.
https://docs.coronalabs.com/daily/coronacards/wp8/index.html#system-requirements
Once you’ve verified that your dev environment meets our min requirements, you should next verify that you can create a new WP8 project via one of Microsoft’s built-in project templates. Such as…
Visual Basic\Store Apps\Windows Phone Apps\Pivot App (Windows Phone Silverlight)
…or…
Visual C#\Store Apps\Windows Phone Apps\Pivot App (Windows Phone Silverlight)
Once created, see if you can build and run it. This will verify that your Visual Studio development environment is set up correctly and that you don’t have a bad installation.