Are there any limitations for sandbox/D+ under x64 OS

So, what the title says. Usually security programs have limited functionality on lets say Vista 64bit and Win7 64bit. Does this apply to CIS as well and what are the limitations (if any)?

Anyone?

Sandbox should work the same on 32 and 64 bit systems.

An old post:

[b]Sandboxing in CIS[/b] The sandboxing component uses file system/registry virtulization + limited user accounts to achieve it's protection. The code written for the sandbox is the same for both 32bit and 64bit platforms. Expect Windows XP 64bit. There are limitations in XP 64bit which doesn't make it possible to support it. However, Vista 64 and later will have it.
https://forums.comodo.com/news-announcements-feedback-cis/cis-v4-informationscreen-shots-and-discussion-t42723.0.html;msg348380#msg348380

Thanks, this clears up lots of my questions.