Upside Down City and Mapserver disconnected

This particular situation happened while clicking the mission door for the mission "Retrieve components from Imperial Storage" from contact 'Alec Parson' in imperial city. I do not have the coordinates of the door, however, I have had this particular glitch/bug happen on multiple toons in praetoria on multiple missions. Anyways, what happens in this glitch -in my case- is upon click the mission door the screen goes white for a brief period only to return to the outside area with a 'Mapserver Disconnected' message and a box saying "No mapServer connection. Try Again." With an ok box, clicking the ok box does not do anything and upon fiddling with my controls I realized that not only was the city upside down and my character not visible but that I could also navigate through the city upside down, including high past the sky limit and below the map itself. I hope I provided enough information. The system I was running durring this bug is running Windows 7 Home Premium 64bit.