Mac OS X 10.6 SDK no longer works with Xcode 7.3?
<p>After updating from Xcode 7.2.1 to Xcode 7.3, building my project was getting the "run destination My Mac is not valid for Running the scheme".  I remembered that I needed to add the 10.6 SDK (which is, unfortunately, the base SDK of this project) into the Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs folder.  Then restart Xcode, and reselect the SDK in the project.  </p>

<p>Except this time, the MacOSX10.6.sdk wasn't listed in any of the SDK popup menus in Build Settings.</p>

<p>Has Apple completely cut off Xcode's ability to use the 10.6 SDK?</p>

<p>Stephen</p>