VIRTUAL BOX ERROR - INACCESSIBLE (Runtime Error 103)

[Christina]

Hello to everybody, I am receiving the following error when opening the Oracle VM VirtualBox:

"The selected Virtual Machine is inaccessible. Please inspect the error message shown below and press the Refresh button if you want to repeat the accessibility check:

Runtime error opening 'C:\ ... \Portable-VirtualBox\Portable-VirtualBox\data\.VirtualBox\Machines\Portable\Portable-VirtualBox\Portable-VirtualBox\data\.VirtualBox\Machines\mozart-oz\mozart-oz.vbox' for reading: -103(Path not found.).

D:\tinderbox\win-4.3\src\VBox\Main\src-server\MachineImpl.cpp[727] (long __thiscall Machine::registeredInit(void)).
Result Code:
E_FAIL (0x80004005)
Component:
Machine
Interface:
IMachine {480cf695-2d8d-4256-9c7c-cce4184fa048} "


*where "..." = the rest of the path the files are in

I have not made any modifications since yesterday that I installed and used it for the first time.
Could you help me?

Thank you in advance,
Christina

[Perryg]

We don't support portable virtualbox.