我遇到的问题和之前有几位开发者遇到的一样，我看到已经有这方面的咨询了，就是根据Getting Started with OpenFace SDK 3.0》按照正确的方式用用Eclipse3.2.0建立了一个HelloWorld程序，在Console这一块儿出现以下提示：
ElooJavaBuilder->build in !!
ElooJavaBuilder->build in base project = P/HelloWorld
ElooJavaBuilder->build proj->P/HelloWorld projType->5
java.lang.NoClassDefFoundError: org/eclipse/jdt/internal/compiler/util/SimpleSet
at eloo.sdk.internal.builder.ElooClasspathJar.findPackageSet(ElooClasspathJar.java:62)
at eloo.sdk.internal.builder.ElooClasspathJar.openJarFile(ElooClasspathJar.java:216)
at eloo.sdk.internal.app.ElooAppBuilderWorker.searchAllComponentXml(ElooAppBuilderWorker.java:413)
at eloo.sdk.internal.app.ElooAppBuilderWorker.elooBuildFull(ElooAppBuilderWorker.java:171)
at eloo.sdk.internal.builder.ElooJavaBuilder.buildAllProcess(ElooJavaBuilder.java:170)
at eloo.sdk.internal.builder.ElooJavaBuilder.buildAll(ElooJavaBuilder.java:146)
at eloo.sdk.internal.builder.ElooJavaBuilder.build(ElooJavaBuilder.java:96)
at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:593)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:168)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:202)
at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:231)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:234)
at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:253)
at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:282)
at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:143)
at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:204)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:58)
ElooJavaBuilder->build out !!
ElooJavaBuilder->build in !!
ElooJavaBuilder->build in base project = P/HelloWorld
ElooJavaBuilder->build proj->P/HelloWorld projType->5
java.lang.NoClassDefFoundError: org/eclipse/jdt/internal/compiler/util/SimpleSet
at eloo.sdk.internal.builder.ElooClasspathJar.findPackageSet(ElooClasspathJar.java:62)
at eloo.sdk.internal.builder.ElooClasspathJar.openJarFile(ElooClasspathJar.java:216)
at eloo.sdk.internal.app.ElooAppBuilderWorker.searchAllComponentXml(ElooAppBuilderWorker.java:413)
at eloo.sdk.internal.app.ElooAppBuilderWorker.elooBuildFull(ElooAppBuilderWorker.java:171)
at eloo.sdk.internal.builder.ElooJavaBuilder.buildAllProcess(ElooJavaBuilder.java:170)
at eloo.sdk.internal.builder.ElooJavaBuilder.buildAll(ElooJavaBuilder.java:146)
at eloo.sdk.internal.builder.ElooJavaBuilder.build(ElooJavaBuilder.java:96)
at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:593)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:168)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:202)
at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:231)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:234)
at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:253)
at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:282)
at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:143)
at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:204)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:58)
ElooJavaBuilder->build out !!
ElooJavaBuilder->build in !!
ElooJavaBuilder->build in base project = P/HelloWorld
ElooJavaBuilder->build proj->P/HelloWorld projType->5
java.lang.NoClassDefFoundError: org/eclipse/jdt/internal/compiler/util/SimpleSet
at eloo.sdk.internal.builder.ElooClasspathJar.findPackageSet(ElooClasspathJar.java:62)
at eloo.sdk.internal.builder.ElooClasspathJar.openJarFile(ElooClasspathJar.java:216)
at eloo.sdk.internal.app.ElooAppBuilderWorker.searchAllComponentXml(ElooAppBuilderWorker.java:413)
at eloo.sdk.internal.app.ElooAppBuilderWorker.elooBuildFull(ElooAppBuilderWorker.java:171)
at eloo.sdk.internal.builder.ElooJavaBuilder.buildAllProcess(ElooJavaBuilder.java:170)
at eloo.sdk.internal.builder.ElooJavaBuilder.buildAll(ElooJavaBuilder.java:146)
at eloo.sdk.internal.builder.ElooJavaBuilder.build(ElooJavaBuilder.java:96)
at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:593)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:168)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:202)
at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:231)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:234)
at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:253)
at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:282)
at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:143)
at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:204)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:58)
ElooJavaBuilder->build out !!
请问这是什么原因？谢谢！