I need to install vagrant in headless ubuntu(Ubuntu 12.04.2 LTS- 64 Bit).Vagrant ver-v1.3.0 and Virtual box- 4.2.18. After adding the vagrant package box, when I am giving \"vag
What ended up working for me when I encountered this error was checking my bios options. I have a lenovo thinkpad x240 and ended up discovering some virtualization options that were disabled.
Once I enabled these, virtualbox functioned as expected.