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I upgraded to 9.01 of Firefox and now get an error 'MORZCRT19.dll" -- because it falls within my area of expertise. I just need a few more details about your situation and I will get to work!

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I upgraded to 9.01 of Firefox and now get an error 'MORZCRT19.dll" --

I upgraded to 9.01 of Firefox and now get an error 'MORZCRT19.dll" --

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If you use ZoneAlarm Extreme Security then disable Virtualization and reinstall Firefox.

See these about a similar problem caused by ZoneAlarm.