When API and MatAPI modes are set in the test system it bombs while loading tests. I created Matlab diaries for both the case where rundef.mac.m sets script mode only and when rundef.mac.m sets script, API, and MatAPI modes. It ran fine in script mode, but not when the API modes were added. The attached files have the resulting outputs, although without the color found in the Matlab command window.
Note that these tests are run with the 10/5 build on the test Mac, as the 10/14 version has an apparently unrelated bug.