Upgraded VirtualBox to 4.1.8r75467. When I start a vm I got an error message
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$ VBoxManage startvm 7b2a72e2-08cd-483b-b594-fe27dff6974a --type headless
Waiting for VM "7b2a72e2-08cd-483b-b594-fe27dff6974a" to power on...
VBoxManage: error: No error info
VBoxManage: error: Details: code NS_ERROR_CALL_FAILED (0x800706be), component ProgressProxy, interface IProgress, callee