Comment by brett.wooldridge: To answer my own question, and for other users having the same issue, this worked: I created a standard Java Application launch configuration, using com.google.gwt.dev.HostedMode as the Main class, and the above recommended classpath. You'll have to get the command arguments right, but you're bright enough to figure that out. Having done that, it would appear to work.
It was never clear to me when reading the instructions before (maybe I should have read more carefully) that a Web Application launch configuration could no longer be used. A Java Application launch configuration is required. That's the magic sauce. For more information: http://code.google.com/p/google-web-toolkit/wiki/OophmForMacBasedGwtContributors --~--~---------~--~----~------------~-------~--~----~ http://groups.google.com/group/Google-Web-Toolkit-Contributors -~----------~----~----~----~------~----~------~--~---
