I'm having problems updating from ZAExtreme Security to the new 2012 version on a Win7 x64 machine.

The installation gets 12% through the Configuring stage and then shows Error Code 127 (52ef3da). When I click on OK, the error code dialogue changes to Error code 127 (52ef312).

Win 7 then takes over and tells me that the installer is not working and to either search for help or close it.