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I get the "getPlusPlus_Adobe_reg.exe" Application Error everytime Firefox starts and plugins dont work, please help?

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I have tried unistalling Firefox, deleting the folder in program files and re-installing from the latest installer (3.6.8) but still get the same error message. When I go to sites with flash apps or video they wont show but do in IE8,. I have all the latest versions. This problem has been ongoing for a few weeks now while IE8 works fine. Everytime I open Firefox I get the pop-up box with the above title and a message saying "The Instruction at "0x00000000" referenced memory at "0x00000000". The memory could not be "read". Click on OK to terminate the program.

I have tried unistalling Firefox, deleting the folder in program files and re-installing from the latest installer (3.6.8) but still get the same error message. When I go to sites with flash apps or video they wont show but do in IE8,. I have all the latest versions. This problem has been ongoing for a few weeks now while IE8 works fine. Everytime I open Firefox I get the pop-up box with the above title and a message saying "The Instruction at "0x00000000" referenced memory at "0x00000000". The memory could not be "read". Click on OK to terminate the program.

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Attached screenshot of error message

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Remove the getplus (Adobe download manager) from your computer. You don't need it; it causes problems for a lot of users. See: http://kb.mozillazine.org/Install_Flash_(Firefox)#Windows_installation_issues http://www.msfn.org/board/remove-adobe-getplusr-t139454.html

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I've disabled the plugin but now Firefox wont open at all, same error message but now it says Firefox.exe instead of getPlusPlus_Adobe_reg.exe.