type metadata accessor for SomeClass

I had an existing app where I added Xcode 7's UI Testing.  When using some of my application-specific methods I got the following error:

Undefined symbols for architecture x86_64:

  "_OBJC_CLASS_$_Quote", referenced from:

      type metadata accessor for __ObjC.Quote in MyUITest.o

ld: symbol(s) not found for architecture x86_64

clang: error: linker command failed with exit code 1 (use -v to see invocation)

According to this guy, the "Allow testing Host Application APIs" checkbox needs to be set:

https://forums.developer.apple.com/thread/20609

What's weird is that I didn't even have that checkbox at all.  To even get that checkbox you need to set "Bundle Loader" and "Test Host" in your test target's "Build Settings".  

http://stackoverflow.com/a/35416945

However, now the tests crash on the XCUIApplication().launch() line with signal SIGKILL

logs:

    t =     0.01s         Launch com.company.aaa

    t =     0.03s             Terminate