VMware disks created by an unsupported version

When you get the following error on VMware:

One or more of the disks used by this virtual machine was created by an unsupported version of VMware Server. To power on or upgrade the virtual machine, either remove the unsupported disks(s) or use a version of VMware Server that supports this version of the disks. Below is a list of the disks and their reported versions.

You can perform the following:

1) Edit file.VMX
2) Modify virtualHWVersion = "n"; n might be 4 for example
3) Edit the smallest file.VMDK (the one without -flat)
4) Modify ddb.virtualHWVersion = "n", the same way as before