[Tom Bunch]

Hey, I'm sort of embarrassed that your question has been sitting here ignored for almost a month. Sorry about that!

Apple recently deprecated many of the SenTestingKit APIs that our tests use. Our release build configuration is pretty pedantic about warnings, thus the failure you're seeing. The build should succeed with the Debug configuration active.

What you can do is enable the deprecated APIs by inspecting the OFUnitTests target, selecting the Build tab of the inspector, select configuration "Release" (or whatever configuration you're actually building) and Collection "Preprocessing". Add "STEnableDeprecatedAssertionMacros" to the Preprocessor Macros (currently probably empty). Try again.

Good luck!

-Tom