When i have tried to load Xubuntu today an error message pops up saying :
Please help, signed new hopeless dev in the making.Failed to open a session for the virtual machine Xubuntu.
Could not open the medium 'C:\Users\User\VirtualBox VMs\Xubuntu\Snapshots/{df08c53f-81da-419b-8d5f-d5749a87b828}.vdi'.
VDI: invalid pre-header in 'C:\Users\User\VirtualBox VMs\Xubuntu\Snapshots/{df08c53f-81da-419b-8d5f-d5749a87b828}.vdi' (VERR_VD_VDI_INVALID_HEADER).
VD: error VERR_VD_VDI_INVALID_HEADER opening image file 'C:\Users\User\VirtualBox VMs\Xubuntu\Snapshots/{df08c53f-81da-419b-8d5f-d5749a87b828}.vdi' (VERR_VD_VDI_INVALID_HEADER).
Result Code: E_FAIL (0x80004005)
Component: MediumWrap
Interface: IMedium {ad47ad09-787b-44ab-b343-a082a3f2dfb1}