Xcallibur Posted August 13, 2011 Share Posted August 13, 2011 Hi, I'm currently trying to install Mac OS X Snow Leopard within VirtualBox 4.0.12 but during its bootup whilst loading "Extensions.mkext" a Critical Error message box appears offering me the chance to power off the machine or attempt to debug it. Can anyone help me to get past this error and boot into Mac OS X? Thankyou for any replies. Attached is a screenshot of when the error occurs during the boot process. Link to comment https://www.insanelymac.com/forum/topic/265490-virtualbox-critical-error/ Share on other sites More sharing options...
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