Hmm, 87 means "the parameter is incorrect". I don't know... I've made a change to the next build that automatically tries to configure this for you, but I don't know if it'll work. Hold tight until the next build and let me know what happens.
@mrsponkie, r73 has a new dialog and tries to fix the problem if the server doesn't start. Could you give it a go and see if it fixes anything? There's also an information messagebox with some info about what it did and whether or not it worked, if you could paste that here that would be handy too!
@mrsponkie last try...edit http name spaces rights with this http://blogs.msdn.com/b/paulwh/archive/2007/05/04/addressaccessdeniedexception-http-could-not-register-url-http-8080.aspx (file is HttpNamespaceManager.zip ,add http://50000 port and give it genericExecute rights)and Merry Xmas ^^edisone2011-12-24 17:39:07