I had an error message upon fireup this AM, and I'm not sure what it means.  The message (see attached) said the Open GL had been turned on due to a "configuration change"... I'm not at all sure what that means.  Yesterday I had some adventures with hidden parts and model features set to "Hide", and I changed one of them to "Show".  Could that be the referred "configuration change"?????  Additionally (and more critically...) what kind of odd behavior can I expect today, since Open GL is enabled?