Dec22Written by:R Teachout
12/22/2006 4:59 AM 
Here's a trick which solves this error:
The virtual machine could not be added. The virtual machine configuration
could not be added. A configuration with this name already exists.
When it won't display, but it DOES exist, just in a new location from where it WAS running from.
The problem is that there are still shortcuts located in C:\Documents and Settings\All Users\Application Data\Microsoft\Virtual Server\Virtual Machines
for each of the VM's causing an issue. Deleting those shortcuts will do the trick.
Note: an uninstall doesn't remove these files!
Ugh..
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