I have also tried a clean install and I also found a duplicate ‘aswCmnB.dll’ file in the Windows\Systems folder, which I have deleted and now the first error: ‘The procedure error point ?log@CLog@@QAAKHKGPADQAEKZZ could not be located…’ has disappeared, but I still have the error: “Avast: Unable to connect to the avast engine. Asats mail protection cannot be started” followed by error message saying 'The add-in “C:\Program Files\Alwil Software\Avast4\ashOutXt.dll” could not be installed or loaded. ???