We did find an error message at the beginning of the semester which seemed to deal more with the traffic load on the D2L servers than an error with the game.  After the first 2 weeks of class, we didn't see the error again.  We do have a fix for the error should it happen again.  Below are the details.

Developer: I have received an error message when I updated a content item and recently just had a second error message.  The error message disables my ability to access the content area completely.  It an error message very similar to one that I have seen in Blackboard.  

Current fix: hit back arrow until I return to the content item that I was working on and then click "revert to draft".  I can then view the HTML code and clean it.  The content area is then again viewable.