It seams that at the moment there is no 64-bit settings manager available.
That is the reason that this doesn't work:
But why is the "Flash Player (32-Bit)" icon in (Windows 7) "Control Panel -> System and Security" and not "Control Panel -> Programs" ?
The Java icon is there too.
During development we determined there was no need or benefit for having a 64-bit control panel. As you have noticed its a 32-bit control panel and easly found if viewing the Control Panel in Icon not catagory mode. Generally, in Windows 7 I find it easier to find most controls using that view state.
As for the Jira bug listed. That is a valid bug and we will be looking into, thank you for pointing that out.