There was some discussion on the GWT group, along with a proposed fix of downloading someone's packaged leopard JDK and changing the symlinks. Not a great fix...
The Lombardi development team has come up with a great work-around.
I put together a jar with the modified BootStrapPlatform code (contains both .class and .java), or get just the src here.
Here are some step-by-step instructions for getting this working in Eclipse:
- add the gwt-dev-mac-snow jar to your Java Build path.
- in Java Build Path -> Order and Export, move the gwt-dev-mac-snow jar above the GWT SDK Library.
- go to Run->Run Configurations. In Web Applications->(your GWT project), click on Arguments, then add -d32 under VM arguments.
That's it! You should now be able to run GWT hosted mode on Snow Leopard.