Ghost 15 and Credentials

I have been using Ghost 12 on Windows XP for along time with zero issues and it has saved my butt a couple of time. Well I had to upgrade to W7 for other reasons and was very displeased to see that Ghost 12 wouldn't work and I was forced to buy Ghost 15. And now I am double mad because I can't ger Ghost 15 to work at all with my set-up. All of my back-up are done to a software raid server running UnRaid. Ghost 15 seems to FORCE you to enter credentials for anything on a network. Well I don't have any or want any on the server, so how do I turn off this feature of Ghost so I can use it. Even if I do add a user and password on the sever it never works. Some times I can see where it writes a file to the server to test connection but back-up always fails.