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I have a program that tests some of our sites with javascript disabled. It worked well, until we updated from WebDriver 2.4.5 to the latest. Now I get this error:

java.lang.IllegalArgumentException: Preference javascript.enabled may not be overridden: frozen value=true, requested value=false

It looks like the argument to disable JS is no longer allowed. I can't downgrade the WebDriver because the earlier versions don't work correctly with our updated Firefox.

What are my options for testing with JS disabled? I know Chrome never worked before, and now Firefox doesn't. I tried searching for "webdriver js disabled" but the results just bring back the javascript.enabled, false argument that no longer seems to work.

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I just tried using HTMLUnit with js disabled. And it works, however screenshots are not possible with it since it doesn't render anything (and I need to be able to take screenshots) – Andrio Aug 29 at 16:24

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