I am trying to connect to selenium 2.30 with FF version 26.0 installed in my AWS unix machine but I am getting below error when I start both my client which access selenium.
Update your selenium jars. The new version of firefox(Or different browser) is not supporting old jars of selenium.
Download both Selenium Server (formerly the Selenium RC Server) Selenium Client & WebDriver Language Bindings
Replace them with old jars you are using. Update your mozilla also so you can get the updated results
source :- http://docs.seleniumhq.org/download/