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POUnable to open the Firefox browser using cmd prompt in watir
 

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    <p>My system configurations Windows 7, IE8 when I try to open the firefox browser I got the following error can anyone help me how to resolve these.</p> <pre><code>C:\Users\khan&gt;irb irb(main):001:0&gt; require 'rubygems' =&gt; true irb(main):002:0&gt; require 'watir-webdriver' =&gt; true irb(main):003:0&gt; e=Watir::Browser.new :firefox NoMethodError: undefined method `ascii_only?' for {}:Hash from D:/Ruby_1.8.7/lib/ruby/gems/1.8/gems/json_pure-1.4.3/lib/json/pure/generator.rb:393:in `to_json' from D:/Ruby_1.8.7/lib/ruby/gems/1.8/gems/multi_json-1.3.7/lib/multi_json/adapters/json_common.rb:11:in `dump' from D:/Ruby_1.8.7/lib/ruby/gems/1.8/gems/multi_json-1.3.7/lib/multi_json.rb:115:in `dump' from D:/Ruby_1.8.7/lib/ruby/gems/1.8/gems/selenium-webdriver-2.29.0/lib/selenium/webdriver/common/json_helper.rb:23:in `json_dump' from D:/Ruby_1.8.7/lib/ruby/gems/1.8/gems/selenium-webdriver-2.29.0/lib/selenium/webdriver/firefox/profile.rb:254:in `write_prefs' from D:/Ruby_1.8.7/lib/ruby/gems/1.8/gems/selenium-webdriver-2.29.0/lib/selenium/webdriver/firefox/profile.rb:253:in `each' from D:/Ruby_1.8.7/lib/ruby/gems/1.8/gems/selenium-webdriver-2.29.0/lib/selenium/webdriver/firefox/profile.rb:253:in `write_prefs' from D:/Ruby_1.8.7/lib/ruby/gems/1.8/gems/selenium-webdriver-2.29.0/lib/selenium/webdriver/firefox/profile.rb:252:in `open' from D:/Ruby_1.8.7/lib/ruby/gems/1.8/gems/selenium-webdriver-2.29.0/lib/selenium/webdriver/firefox/profile.rb:252:in `write_prefs' from D:/Ruby_1.8.7/lib/ruby/gems/1.8/gems/selenium-webdriver-2.29.0/lib/selenium/webdriver/firefox/profile.rb:232:in `update_user_prefs_in' from D:/Ruby_1.8.7/lib/ruby/gems/1.8/gems/selenium-webdriver-2.29.0/lib/selenium/webdriver/firefox/profile.rb:79:in `layout_on_disk' from D:/Ruby_1.8.7/lib/ruby/gems/1.8/gems/selenium-webdriver-2.29.0/lib/selenium/webdriver/firefox/launcher.rb:58:in `create_profile' from D:/Ruby_1.8.7/lib/ruby/gems/1.8/gems/selenium-webdriver-2.29.0/lib/selenium/webdriver/firefox/launcher.rb:34:in `launch' from D:/Ruby_1.8.7/lib/ruby/gems/1.8/gems/selenium-webdriver-2.29.0/lib/selenium/webdriver/firefox/socket_lock.rb:20:in `locked' from D:/Ruby_1.8.7/lib/ruby/gems/1.8/gems/selenium-webdriver-2.29.0/lib/selenium/webdriver/firefox/launcher.rb:32:in `launch' from D:/Ruby_1.8.7/lib/ruby/gems/1.8/gems/selenium-webdriver-2.29.0/lib/selenium/webdriver/firefox/bridge.rb:20:in `initialize' from D:/Ruby_1.8.7/lib/ruby/gems/1.8/gems/selenium-webdriver-2.29.0/lib/selenium/webdriver/common/driver.rb:31:in `new' from D:/Ruby_1.8.7/lib/ruby/gems/1.8/gems/selenium-webdriver-2.29.0/lib/selenium/webdriver/common/driver.rb:31:in `for' from D:/Ruby_1.8.7/lib/ruby/gems/1.8/gems/selenium-webdriver-2.29.0/lib/selenium/webdriver.rb:67:in `for' from D:/Ruby_1.8.7/lib/ruby/gems/1.8/gems/watir-webdriver-0.6.2/lib/watir-webdriver/browser.rb:46:in `initialize' from (irb):3:in `new' from (irb):3 from ♥:0irb(main):004:0&gt; </code></pre>
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    1. COhi friends when i try to open the browser in firefox after requiring watir-webdriver i am running into following error
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      1. USkhan
    2. COIs the problem firefox specific or do you get the same exception in other browsers (eg chrome and ie)?
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      1. USJustin Ko
    3. COyaa the issue is with others browsers too....chrome ,its fine with IE
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      1. USkhan
 

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