'Couldn't find the current boot disk in the list of disk' or 'A configuration error exists' App Layering/Unidesk 2.x: Desktop Task Fails

Desktop edit fails with 'Couldn't find the current boot disk in the list of disk' or 'A configuration error exists'. Note, "A configuration error exists" could also apply to an inconsistent snapshot configuration on the VM, so see this KB article as well...

How to resolve "A general system error has occurred:vim.fault.genericvmconfigfault" error

You may receive an error when performing any operation on a Unidesk machine, including backups or even just powering the machine on: A general system error has occurred:vim.fault.genericvmconfigfault If your investigation leads you to check the snapshot configuration, and the snapshots are just...