Maximum number of tests?

Is there a maximum count of tests? I am write my tests with Jasmine und run it with Karma. If I have 43 tests everything works fine. If I have 44 tests I get the following error:

PhantomJS 1.9.8 (Linux) ERROR
TypeError: ‘undefined’ is not an object (evaluating ‘ionic.Platform.platforms.length’)
at /vagrant/bower_components/ionic/release/js/ionic.js:1924
PhantomJS 1.9.8 (Linux): Executed 44 of 45 (skipped 1) ERROR (0.124 secs / 0.208 secs)

It does not depend on a single test. I can uncomment any of my tests and it is always reproducable.