I am using Zone Alarm free firewall (without antivirus)
Firefox 14.0.1
Zone Alarm Security Engine 1.5.395.0

When I launch Firefox I get this error message:

unload: [Exception... "Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsIObserverService.removeObserver]" nsresult: "0x80004005 (NS_ERROR_FAILURE)" location: "JS frame :: chrome://trustchecker/content/trustchecker.js :: <TOP_LEVEL> :: line 991" data: no]

If I disable the security engine add-on, it does not appear. Hence I deduce that it is a problem with this, or maybe it has an incompatibility with another plug-in.

Has anyone any comments please?

Thank you,

John Butcher.