We are testing SM15 for a future deployment.  We haven't purchased yet, waiting until right before we are ready to roll it out.  I am able to get some of the API functions to work.  I can create a user, however I cannot modify a user.  Go figure.  Why would that be?  I get an error that the web service operation cannot be found.  I'm using the same auth login that allows me to create a new user.