The project XXX does not have any GWT SDKs on its build path

Question

Sometimes, when I start Eclipse (Java EE IDE for Web Developers, Indigo SR 1) on my MacOSX Lion, my GWT (2.4.0) project initially fails to compile<

Answer 1

In my case the GWT_CONTAINER was added below the JRE_CONTAINER. Fixing this manually within my .classpath file solved the problem!