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need to go back to version prior to 4.0 until norton antivirus updates plug-in

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When I upgraded to 4.0 a message appeared to say that the Norton Security Anti-virus plug-in was not able to accessed. Norton says they won't have update till May. So I need to uninstall 4.0 and reinstall the version prior to that. My operating system is Windows 7 64 bit.

When I upgraded to 4.0 a message appeared to say that the Norton Security Anti-virus plug-in was not able to accessed. Norton says they won't have update till May. So I need to uninstall 4.0 and reinstall the version prior to that. My operating system is Windows 7 64 bit.

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