Virtual machine is already in the inventory

Hello,

I'm trying to add a virtual machine I copied from other system to my GSX server but when I open it I get the following message:

unable to add virtual machine to the inventory "C:\...".

Virtual machine is already in the inventory.[/b]

Virtual machine I want to add is a Suse Linux Enterprise Server and I got one before, but I already deleted it.

What do you think? What am I doing wrong?

Thanks in advance for your help.

Regards,

Carles