I tried installing Norton Ghost 15 awhile back from a download and it wouldn’t install correctly. Newegg had a good deal on Ghost on Black Friday for $20 so I bought the disc. Tried to install tonight and I got the same error I got last time “No Mapping between account names and security ID’s was done”. What does this mean and how does it effect the operation of Ghost? It was right at the very end when this happened so I canceled the install but it still was installed on the computer. I assume Ghost will not operate right if this is not done. Is there a fix for this or is something wrong with my computer?