Re: getting a error massage.

Its related to application quiesced snapshots

Whats the value for disk.EnableUUID, is it true or its False?

you can check the same from Settings> Options>General> Configuration Parameters.

Whats the operating system?

If its Server 2008, please see the following KB:

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2013536