from what you've sent me I could say that you didn't include the Preview add-on in the compilation at all. In your package, this core file for preview add-on is missing: addon_preview.php. So I'm not even sure what you did and how... surely, if the add-on is not included in the compilation, it will not appear anywhere.
Also, I'm not sure why (couldn't repeat it that way with the Compiler); but in the package you've sent me, there is no admin panel file named 'nn_admin.php' like you possibly specified it upon the compiling; there's another admin panel name - nn_divinity.php, not sure why it happened so? What did you type to achieve this? ;)