If there was no changes from one point to the next then that's not an error message but informational. When you disabled SR and enabled it, a shiny new restore point is made. If you tried to make another, that message should occur. While this may sound confusing, nothing was found different hence the message.

To test if it's working you may have to install some software or wait awhile for a Windows Update.

On the surface, I think its ok.

Bob