title: Error in adding new object to Data Model diagram
body: <p>I am unable to drag in new elements (e.g. sql table, view, query, database connection...) into my UML diagram for sparks EA. I was able to do this until the other day &amp; get the following error:
  <img src="https://i.stack.imgur.com/JhOyJ.png" alt="get the following error: " /></p>
  <p>It seems like something to do with the session id or something..?<br />
  Also noticed that a lot of the logos are now the same grey &quot;&lt;&gt;&quot; , when before they were all different</p>
  <p><img src="https://i.stack.imgur.com/IOt83.png" alt="(see here)" /></p>