I don't think this issue has been addressed, but I've noticed most of the registry objects I've tried (registry 2, Power Registry, Registry++)working with are only 32-bit. When a registry edit is called from MMF2 under a 64-bit version of Windows, registry edits are placed here:
\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Policies\System\ ...and don't take effect. Sad.
Here's a link to accessing the registry under a 64-bit OS:
Please login to see this link.
It'd also be nice including some kind of function for testing OS version. It's not a necessity, as the OS Info extension can determine whether a 32-bit or 64-bit OS is installed, but it'd be kinda nice keeping it all in one object, especially since ensuring registry compatibility essentially means doing twice the work.