How to restore a VirtualBox virtual machine if the config file is broken?

Question

virtual box

Ubuntu 12.04 host system. The disk space ran out, as a result, the config file was broken (it could not be saved completely).
As a result: the snapshot files and the virtual machine disk are intact. But due to a broken config, it is not possible to load it. How to restore a virtual machine?

I googled something on this topic ( 1 , 2 )

I haven't tried the script from the 2nd article yet. Are there other ways that will reduce shamanism to a minimum? Without the need to delve into the config file and edit something yourself (the config file is half preserved)?

VirtualBox v4.1.20

Answer 1

And why not just create a new one and re-bind this disk? What's valuable in the config?

Answer 2

Did the Logs folder survive? If yes, then there is a chance to restore manually.

Answer 3

Were you able to restore from a snapshot? If yes, then in what way?
Addendum: It worked out by trial and error.
We have:
Target:
Action plan:
These steps are required to register virtual hard disks in VirtualBox.