Can't install Default Menu Options object on Windows Vista 64-bit

Where did you download the object? If you used ExtensionView, then it probably means that the download link isn't valid, and, as a result, it downloaded an invalid installer, which makes it think that the problem is that it isn't a valid 64-bit executable, but the real problem is that it isn't a valid 64-bit or 32-bit executable, since it isn't really a proper executable in the first place. Try this download link: Please login to see this link.

And let me know if it works.

P.S. The same guy who made that object has also made several other objects, which can be found here: Please login to see this link.

Yeah, Immediate If is awesome. I used it in a five event Metroid-like game engine (well, six if you include global events, but it was designed to fit with the rules of a five event challenge I made (which allows for up to 5 global events)). His Overlay Redux object has been pretty much replaced by the Surface object, but he was still the first one to make such an object, which means it's still an awesome object.