Strange message when removing an Immutable disk and 'Remove' button should not be enabled

[Mark Cranness]

• Create a new hard disk, and mark it as immutable.
• Attach it to a VM.
• Use Virtual Media Manager to remove it (Remove button should not be enabled)
• "Are you sure?" - Remove
• "Do you want to delete?" - Keep

  Failed to close the hard disk C:
  ...
  Hard disk '<NULL>' has 20641136 child hard disks
  

If I answer "Do you want to delete?" - Delete, the message is:

Hard disk '<NULL>' has 0 child hard disks

[Frank Mehnert]

The message looks better now. Actually one must remove the childs first. Though you are right, the remove button should be grayed out.

[Frank Mehnert]

AFAIR fixed a few releases ago.