This is part of the Avery Wizard. It is under Appdata/Roaming in Vista/Win7. Apparently it happens when you update the system and the location of that module isn't quite the same as before, such as if you change the user name where Appdata/Roaming is located.
The simplest way to get this error message removed is to reinstall Avery Wizard (now at 3.1.5). I got an error trying to install it in Windows7, but my effort got rid of the error message "AZWizardModul Compile Error in hidden Module." I asked them to update their software for Win7. If you install the wizard again under Vista, it will probably work.