Start Firefox in [[Safe Mode]] to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes). * Don't make any changes on the Safe mode start window. See [[Troubleshooting extensions and themes]] and [[Troubleshooting plugins]] If it does work in Safe-mode then disable all your extensions and then try to find which is causing it by enabling one at a time until the problem reappears. * Use "Disable all add-ons" on the [[Safe mode]] start window to disable all extensions. * Close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit") ---- Your above posted system details show multiple Java Console extensions.<br /> You can uninstall (remove) the Java Console extensions and disable the Java Quick Starter extension, you do not need them to run Java applets. See http://kb.mozillazine.org/Java#Multiple_Java_Console_extensions See also http://www.java.com/en/download/help/quickstarter.xml - What is Java Quick Starter (JQS)? What is the benefit of running JQS? - 6.0 Disable the Java Quick Starter extension: Tools -> Addons -> Extensions<br /> Control Panel -> Java -> Advanced tab -> Miscellaneous -> Java Quick Starter (disable)

Thank you for that reply. I have stopped the error message and am slowly bringin back the addins.