Hypervisor error build 4560

I am having a problem with my new 4560 build. I'm running OSX 10.5 Leopard, I installed Parallels and everything ran smoothly, started up XP, etc. When I restarted up my computer, I am getting an error: "Unabe to communicate with Hypervisor." What is the problem?

 

Tell me where to get Leopard 10.5 and I will work the problem.

 

Become an ADC member like me. I'd go to Apple with this, but it isn't Apple's problem, it's the compatibility of this prog.

 

Please describe your problem in more details.

What kind of Mac do you have (full information) ? Build of Leopard, configuration of guest os?

Do you start Parallels immediately after you start Mac OS X ?

 

Leopard WWDC 2007 version (9a466)

MB 2GHz 1GB ram

Sometimes it works, with a restart. But for the majority it doesn't