[java] Compiling module test.MainModule
[java] Resolving test.client.mapping.AppPlaceHistoryMapper
[java] Found type 'test.client.mapping.AppPlaceHistoryMapper'
[java] [ERROR] Annotation error: cannot resolve test.client.places.HomePlace$HomePlaceTokenizer
[java] java.lang.ClassNotFoundException: test.client.places.HomePlace$HomePlaceTokenizer
[java] at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
[java] ...
[java] at com.google.gwt.dev.Compiler.main(Compiler.java:177)
[java] [ERROR] Annotation error: expected class java.lang.Class, got null
[java] [ERROR] Annotation error: cannot resolve test.client.places.ListPlace$ListPlaceTokenizer
[java] java.lang.ClassNotFoundException: test.client.places.ListPlace$ListPlaceTokenizer
[java] at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
[java] ...
[java] at com.google.gwt.dev.Compiler.main(Compiler.java:177)
[java] [ERROR] Annotation error: expected class java.lang.Class, got null
[java] Scanning for additional dependencies: file:/test/client/MainModule.java
[java] Computing all possible rebind results for 'test.client.mapping.AppPlaceHistoryMapper'
[java] Rebinding test.client.mapping.AppPlaceHistoryMapper
[java] Invoking generator com.google.gwt.place.rebind.PlaceHistoryMapperGenerator
[java] [ERROR] Generator 'com.google.gwt.place.rebind.PlaceHistoryMapperGenerator' threw an exception while rebinding 'test.client.mapping.AppPlaceHistoryMapper'
[java] java.lang.NullPointerException
[java] at com.google.gwt.place.rebind.PlaceHistoryGeneratorContext.getWithTokenizerEntries(PlaceHistoryGeneratorContext.java:285)
[java] ...
[java] at com.google.gwt.dev.Compiler.main(Compiler.java:177)
[java] [WARN] For the following type(s), generated source was never committed (did you forget to call commit()?)
[java] [WARN] test.client.mapping.AppPlaceHistoryMapperImpl
[java] [ERROR] Errors in 'file:/test/client/MainModule.java'
[java] [ERROR] Line 33: Failed to resolve 'test.client.mapping.AppPlaceHistoryMapper' via deferred binding
[java] [ERROR] Cannot proceed due to previous errors
It looks like the client-side classes haven't been compiled (javac) or that the output from javac is not in the classpath for the GWT compiler.