I am encountering this exception while trying to run performance tests on Android. Here is my test script: https://gist.github.com/bureto/1c284fa7cdbe20c1350c722e4aa1f121 Things to note: The test runs fine in editor play mode. I am running the test on Android via the "Run all in player " button located in the Test Runner editor window. After the test is built on the device, and after the splash screen, the screen goes black when it encounters this exception and nothing is sent back (i.e. the test isn't run). I'm still unsure how this all works together; looking for help trying to get it to run on Android. Do I have to create a class that implements ITestRunCallback for it to work on Android? (I tried this but still encounter the exception, although maybe I didn't implement it properly?) Also, unrelated but would like to know if there is a solution: Is it possible to run the tests on a device without building every time? I.e. Am I able to just run the built app on the phone or w/e and it will perform the tests and give feedback? This would be much more convenient than having to build every time I press the "Run all in player" button.