Getting Result Code: E_FAIL (0x80004005) When trying to Delete Guest

[darko]

Virtual Box refusing to delete snapshots or disks or guests and genrating errors Result Code: E_FAIL (0x80004005) .

The history is: An upgrade from VirtualBox 3.8.x to 3.10.x was done. I did not remove advanced network interfaces. All network interfaces were lost upon upgrade. This guest host had on one them. When trying to delete it, it generated the error. I kept deleting snapshots and still no fix. It refused to delete the last snapshot or the guest. I managed to restore from snapshot. I booted into OS. i shut down cleanly. It still refuses to delete the last snapshot or remove the guest.

Error as per below. Result Code: E_FAIL (0x80004005) Component: Machine Interface: IMachine {6d9212cb-a5c0-48b7-bbc1-3fa2ba2ee6d2}

[darko]

VBox log

[aeichner]

Please reopen if still relevant with a recent VirtualBox release.