The title says everything.
I had a huge disable of Firefox extensions on Vista… tried MozBackup restore, try to restore all the folder, try System Restore… I can’t even install the extensions again.
Most of the errors are variable not defined and:
Erro: [Exception... "Component returned failure code: 0x80004005 (NS_ERROR_FAILURE) [nsISafeOutputStream.finish]" nsresult: "0x80004005 (NS_ERROR_FAILURE)" location: "JS frame :: file:/// ... /Firefox/components/nsExtensionManager.js :: closeSafeFileOutputStream :: line 568" data: no]
Arquivo-fonte: file:/// ... /Firefox/components/nsExtensionManager.js
Linha: 568
Disabling ThreatFire, everything works, extensions install and uninstall, update, etc.