Microstudio does not yet work on any 64 bit system. MTU is working on this but have not solved it completely yet. When they do in order to get it to work you will have to upgrade to whatever version they come out with the fixes in to get it to work on that machine.
To fix some of the problems you are having you will need to do the changes to Windows 7 listed for Hoster at this link:
http://www.mtu.com/upgrades/hoster/windows7-changes.htm
Microstudio and Hoster share the same player setup and operation this is why you need to do this.