|I was getting the error below with Virtualbox 4.1.8 and using:
VBoxManage startvm Win7 --type headless
Waiting for VM "Win7" to power on...
Google found someone that had the same problem than me and I wanted to share the fix in case any of you run into this same error https://forums.virtualbox.org/viewtopic ... mp;t=46815
VBoxManage: error: No error info
VBoxManage: error: Details: code NS_ERROR_CALL_FAILED (0x800706be), component ProgressProxy, interface IProgress, callee
However, instead of /var/local/virtualboxvms/ I find them in ~/.VirtualBox/Machines/