At the current time SpyCop Cloak is not supported by 64 bit editions of Microsoft Windows. There are certain aspects of the cloaking technology that are currently not supported in the 64 bit environment and that is why SpyCop Cloak will not run on these operating systems.
In the near future, there will be an update for SpyCop Cloak that will allow it to function on 64 bit editions of Microsoft Windows.
SpyCop Cloak is currently only compatible with Windows 2000, all versions of Windows XP and all versions of Vista.
Cloak currently does not support 64 bit.