vboxmanage closemedium disk broken: "The object is not ready", worked in 3.x

[VirtualBoxBug]

VBoxManage closemedium disk deleteme.vdi --delete

gives

VBoxManage.exe: error: The object is not ready VBoxManage.exe: error: Details: code E_ACCESSDENIED (0x80070005), component Medium, interface IMedium, callee IUnknown Context: "FindMedium(Bstr(pszFilenameOrUuid).raw(), enmDevType, pMedium.asOutParam())" at line 174 of file VBoxManageDisk.cpp

The same result with full path to the vdi or without the extension; in fact whatever I write as the disk name I get the same error. It worked in 3.x and the vdi can be removed using the GUI. I can't use --delete when unregistering the VM because I want to keep the OS disk.

MAYBE RELATED: some other guy at ​http://daniel.hepper.net/blog/ got

$ VBoxManage list vms "" {b68ed7a7-6e72-4f16-a438-8775cd80d9b3} $ VBoxManage unregistervm {b68ed7a7-6e72-4f16-a438-8775cd80d9b3} --delete VBoxManage: error: The object is not ready VBoxManage: error: Details: code E_ACCESSDENIED (0x80070005), component Machine, interface IMachine, callee nsISupports Context: "Delete(ComSafeArrayAsInParam(aMedia), pProgress.asOutParam())" at line 175 of file VBoxManageMisc.cpp Segmentation fault

some other guy at ​http://forums.virtualbox.org/viewtopic.php?f=7&t=38150

Simply unregistering the machine without detaching the drives first seems to work, however unregistering the machine with the '--delete' flag gives:

Code: Select all Expand viewCollapse view

VBoxManage: error: The object is not ready VBoxManage: error: Details: code E_ACCESSDENIED (0x80070005), component Machine, interface IMachine, callee nsISupports Context: "Delete(ComSafeArrayAsInParam(aMedia), pProgress.asOutParam())" at line 167 of file VBoxManageMisc.cpp Segmentation fault (core dumped)