My colleague updated the design but I cannot see those changes in my design. I have checked the design out from Subversion and I have the .svn file in my working copy directory. What is wrong?
Nothing. You must first select Refresh Incoming Changes in Pending Changes pane and after that you can Update Working Copy. Data Modeler does not automatically ask Subversion for incoming changes. You must do it yourself before updating the working copy.
UPDATE: DM 4.1.5. In Pending Changes select the Incoming Changes tab and select Refresh Incoming Changes.