virtualbox.org

Runtime error opening 'C:\Users\Oscar\VirtualBox VMs\UBUNTU 12.04\UBUNTU 12.04.vbox' for reading: -103(Path not found.).
F:\tinderbox\win-4.3\src\VBox\Main\src-server\MachineImpl.cpp[731] (long __cdecl Machine::registeredInit(void)).
Código Resultado:
E_FAIL (0x80004005)
Componente:
Machine
Interfaz:
IMachine {480cf695-2d8d-4256-9c7c-cce4184fa048}

The above error message i receive and I don't know how to resolve because I can access to the configuration of the vm.

What can i do ?

Likely the .vbox configuration file is pointing to another file that can't be found.

A google search on:

"vbox path not found site:forums.virtualbox.org"

returns a post suggesting your drive letters may have changed. Another post suggests the guest may have been on an external USB drive, which could have also suffered from a drive letter change.