Windows 7 Virtual XP on Windows 7 active debugger in memory

I have bought a game called roller coaster tycoon 2. It installs but will not launch. I installed in on to virtual XP and it says I have an active debugger in memory. unload and restart. I have tried the demo of the product and it worked fine on my computer. I have tried the different things that microsoft said to do but none of these things worked or applied to me. I read that because its a virtual system that the game will not run because it thinks the program is being hacked. i tried running the compatibilty mode in all setteing on my windows 7 but doesn't work. Can any one help me with the Virtual xp mode and active debugger in memory or windows 7 compatibilty mode?

PS, i have been to Atari's support pages and my download site and they can't help or know whats going on

Windows 7 professional, 64 bit
8 gigs of memeory
t9550 intel processors
Radeon 4570 graphics card

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