close method throws TypeError

[ceakins]

Repro Steps:

1. Add some test steps.
2. Add 'close' method.
3. Run test script against grid.

Expected result: Close the browser
Actual Result: TypeError: builder.selenium2.rcPlayback.types[r.currentStep.type.getName(...)] is not a function

Selenium Server Version: 2.53.0
Firefox Version: 46.0.1