Parent UUID ... of the medium ... does not match UUID... of its parent medium stored in the media registry ...

[mslw]

I have a virtual hd which reports the following:

$ VBoxManage showhdinfo b4938314-1204-43f0-8752-767515f71b39
UUID:           b4938314-1204-43f0-8752-767515f71b39
Parent UUID:    9c1d4675-e810-45d6-941d-ba0ced1037ea
State:          inaccessible
Access Error:   Parent UUID {b43a1680-4e28-45a7-80d4-7f43520f54df} of the medium '/u/martin/VirtualBox VMs/Windows XP Professional/Snapshots/{b4938314-1204-43f0-8752-767515f71b39}.vmdk' does not match UUID {9c1d4675-e810-45d6-941d-ba0ced1037ea} of its parent medium stored in the media registry ('/u/martin/.VirtualBox/VirtualBox.xml')
Type:           normal (differencing)
Auto-Reset:     off
Location:       /u/martin/VirtualBox VMs/Windows XP Professional/Snapshots/{b4938314-1204-43f0-8752-767515f71b39}.vmdk
Storage format: VMDK
Format variant: differencing default
Capacity:       0 MBytes
Size on disk:   0 MBytes
In use by VMs:  Windows XP Professional (UUID: ed45ab68-3ae8-4c86-bb30-54b728ade86c) [Snapshot 1 (UUID: 3c90fa44-287d-4e66-8c7c-91d65ad7c340)]

I suspect something went wrong in the past while deleting a snapshot.

I've attached the VM's logs and .vbox files.

[JK-o3]

Hi, I have similar problem: 5 snapshots, deleted oldest one and got error message (unfortunately I didn't get screen capture) and now "could not open medium" error when trying to delete it again. Same error if trying to delete any of snapshots. Vm not starts but error "Failed to open a session for the virtual machine nnn" + "No error info". Using version 4.3.28 r100309 on Windows 7 64 bit.

I've had this problem earlier and simply deleted missing snapshot file from xml and set next snapshot parent but no such xml on v4. How to fix this on v4?