Hi - I'm new to GWT and am trying to debug a GWT client maven project in Eclipse. I imported the maven project, without errors. When I launch the debugger by right-clicking on the project -> Debug As -> web application, I see the launch URL in the google dev mode window. When I open the URL in a browser, the project starts to compile and I see this:
The code server is ready at http://127.0.0.1:9876/ Code server started in 4000 ms waited 1338 ms for code server to finish GET /recompile/fsuUI Job com.centurylogix.ui.FsuUI_1_0 starting job: com.centurylogix.ui.FsuUI_1_0 binding: user.agent=safari Compiling module com.centurylogix.ui.FsuUI [WARN] Unable to read: jar:file:/Users/rgregory/.m2/repository/com/google/gwt/gwt-user/2.6.0/gwt-user-2.6.0.jar!/com/google/gwt/core/Core.gwtar. Skipping: java.io.InvalidClassException: com.google.gwt.dev.javac.CompilationUnit; local class incompatible: stream classdesc serialVersionUID = 3631357674639647071, local class serialVersionUID = 5263131532433775474 [WARN] Unable to read: jar:file:/Users/rgregory/.m2/repository/com/google/gwt/gwt-user/2.6.0/gwt-user-2.6.0.jar!/com/google/gwt/user/User.gwtar. Skipping: java.io.InvalidClassException: com.google.gwt.dev.javac.CompilationUnit; local class incompatible: stream classdesc serialVersionUID = 3631357674639647071, local class serialVersionUID = 5263131532433775474 [WARN] Unable to read: jar:file:/Users/rgregory/.m2/repository/com/google/gwt/gwt-user/2.6.0/gwt-user-2.6.0.jar!/com/google/gwt/regexp/RegExp.gwtar. Skipping: java.io.InvalidClassException: com.google.gwt.dev.javac.CompilationUnit; local class incompatible: stream classdesc serialVersionUID = 3631357674639647071, local class serialVersionUID = 5263131532433775474 [WARN] Unable to read: jar:file:/Users/rgregory/.m2/repository/com/google/gwt/gwt-user/2.6.0/gwt-user-2.6.0.jar!/com/google/web/bindery/event/Event.gwtar. Skipping: java.io.InvalidClassException: com.google.gwt.dev.javac.CompilationUnit; local class incompatible: stream classdesc serialVersionUID = 3631357674639647071, local class serialVersionUID = 5263131532433775474 [WARN] Unable to read: jar:file:/Users/rgregory/.m2/repository/com/google/gwt/gwt-user/2.6.0/gwt-user-2.6.0.jar!/com/google/gwt/logging/Logging.gwtar. Skipping: java.io.InvalidClassException: com.google.gwt.dev.javac.CompilationUnit; local class incompatible: stream classdesc serialVersionUID = 3631357674639647071, local class serialVersionUID = 5263131532433775474 [WARN] Unable to read: jar:file:/Users/rgregory/.m2/repository/com/google/gwt/gwt-user/2.6.0/gwt-user-2.6.0.jar!/com/google/gwt/json/JSON.gwtar. Skipping: java.io.InvalidClassException: com.google.gwt.dev.javac.CompilationUnit; local class incompatible: stream classdesc serialVersionUID = 3631357674639647071, local class serialVersionUID = 5263131532433775474 Ignored 10 units with compilation errors in first pass. Compile with -strict or with -logLevel set to TRACE or DEBUG to see all errors. Tracing compile failure path for type 'com.google.gwt.lang.Array' [ERROR] Errors in 'com/google/gwt/dev/jjs/intrinsic/com/google/gwt/lang/Array.java' [ERROR] Line 349: Referencing method 'java.lang.Class.getClassLiteralForArray(*)': unable to resolve method in class 'java.lang.Class' [ERROR] Hint: Check that the type name 'com.google.gwt.lang.Array' is really what you meant [ERROR] Hint: Check that your classpath includes all required source roots [ERROR] Unexpected internal compiler error java.lang.NullPointerException at com.google.gwt.dev.jjs.impl.UnifyAst.addRootTypes(UnifyAst.java:735) at com.google.gwt.dev.jjs.JavaToJavaScriptCompiler$Precompiler.unifyJavaAst( JavaToJavaScriptCompiler.java:1291) at com.google.gwt.dev.jjs.JavaToJavaScriptCompiler$Precompiler.constructJavaAst( JavaToJavaScriptCompiler.java:1038) at com.google.gwt.dev.jjs.JavaToJavaScriptCompiler$Precompiler.precompile( JavaToJavaScriptCompiler.java:954) at com.google.gwt.dev.jjs.MonolithicJavaToJavaScriptCompiler.precompile( MonolithicJavaToJavaScriptCompiler.java:303) at com.google.gwt.dev.jjs.JavaScriptCompiler.precompile( JavaScriptCompiler.java:38) at com.google.gwt.dev.Precompile.precompile(Precompile.java:286) at com.google.gwt.dev.Precompile.precompile(Precompile.java:229) at com.google.gwt.dev.Precompile.precompile(Precompile.java:145) at com.google.gwt.dev.Compiler.run(Compiler.java:206) at com.google.gwt.dev.codeserver.Recompiler.doCompile(Recompiler.java:333) at com.google.gwt.dev.codeserver.Recompiler.compile(Recompiler.java:161) at com.google.gwt.dev.codeserver.Recompiler.recompile(Recompiler.java:119) at com.google.gwt.dev.codeserver.Outbox.recompile(Outbox.java:128) at com.google.gwt.dev.codeserver.JobRunner.recompile(JobRunner.java:81) at com.google.gwt.dev.codeserver.JobRunner.access$100(JobRunner.java:34) at com.google.gwt.dev.codeserver.JobRunner$2.run(JobRunner.java:73) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.ThreadPoolExecutor.runWorker( ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run( ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745) [ERROR] Compiler returned false [WARN] recompile failed [WARN] continuing to serve previous version My maven pom.xml references GWT 2.6 and I installed the latest Eclipse GWT plugin. 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