Accidentally dragged my windows XP to the trash

[Luci]

I accidentally dragged my windows XP.vdi to the trash and when I brought it back to the applications folder the Virtual Box couldn't "find" it. I've been searching through forums and have tried a few things. Up to now, this is the error read I am now getting. Any Suggestions?

Failed to open a session for the virtual machine WindowsXP.
UUID {981cc0a0-6c6f-453b-8f08-cea5746a1b00} of the medium '/Users/lucigabel/VirtualBox VMs/WindowsXP/WindowsXP.vdi' does not match the value {2c3a0858-eebd-497f-9b8d-8c7991ff8504} stored in the media registry ('/Users/lucigabel/Library/VirtualBox/VirtualBox.xml').

I have tried replacing the UUID of the media registry (Virtual Box.xml) with the "UUID of the medium" but it doesn't do anything to change this message.

[mpack]

The VDI UUID is embedded in its header, and cannot be changed by moving it around using the host OS. So, we are missing part of this story I think.

Just make sure when moving the file back to put it in the correct place. Do you have more than one XP VM? The error message seems to indicate so.