I have just started using VirtualBox on a 64bit version of Windows 7. So far it has been running a Ubuntu for a few weeks with no problems.
Today I tried to get OSX to work. I created a virtual machine according to this guide but so far, regardless of whether the OSX DVD is mounted or not, the machine immediately crashes with the following error:
Failed to open a session for the virtual machine OSX Unknown error creating VM (VERR_VMX_MSR_LOCKED_OR_DISABLED)
After googling this message, it seems this is usually caused by the host machine not supporting virtualization properly. However, I know this cannot be the case because it runs Ubuntu fine.
What is going on?