The scheme 'PrintingWebView' contains no buildables that can be built for the SDKs supported by the run destination My Mac 64-bit. Make sure your targets all specify SDKs that are supported by this version of Xcode.

The scheme 'PrintingWebView' contains no buildables that can be built for the SDKs supported by the run destination My Mac 64-bit. Make sure your targets all specify SDKs that are supported by this version of Xcode.

I've met with this problem. In my case, the following steps can solve it:
your project -> target -> Build Setting
Modify following items: 1.Base SDK ; 2.Architectures ; 3.iOS Deployment Target.
And then clean and build the application.
Try this simple one:
Target
'---> General
'---> Deployment Info
'---> Deployment Target
'---> Choose Version (Better lower version)
Above answer is right. I was doing one silly mistake, my application was specifically for iPad, and i was mistakenly trying to build on iPhone simulator, and got this error. Make sure, to deploy on relevant device as well.