I have been unable to get the BIM server to run on our office Server machine. The server is running Mac 10.5.8 Server software. It does show that the messaging port 61616 is occupied, but selecting an open port does not help. When starting the BIM server it just says "Waiting to start" and then reverts to Stopped. I've been communicating with Graphisoft technical support, but I thought I'd put the question out there for all the AC gurus.