Eclipse 在一个项目上给了我一个红色的 X。我将此项目与另一个工作区中的类似项目进行了比较。类路径是不同的（它应该是），并且应该是一些源文件。但是问题选项卡中的错误说
“由于“”，项目未构建。修复问题，然后尝试刷新此项目并构建它，因为它可能不一致”
是的，看起来像关键信息的关键点只是说“”。我尝试刷新和重建无济于事。该项目是从工作区外部导入的。但这应该没关系，不是吗？我以前做过，没有任何问题。但是一个类似的项目（我正在比较的那个）在工作区中运行良好。
我还能在哪里寻找可能帮助我缩小范围的错误信息？
update - 这个项目被其他人用作项目参考，但这个项目不依赖其他人。这是它的类路径文件内容：
<classpath>
<classpathentry kind="src" path="src"/>
<classpathentry kind="src" path="test"/>
<classpathentry kind="con" path="org.eclipse.jst.j2ee.internal.module.container"/>
<classpathentry kind="con" path="org.eclipse.jst.server.core.container/com.ibm.ws.ast.st.runtime.runtimeTarget.v70/was.base.v7">
<attributes>
<attribute name="owner.project.facets" value="jst.utility"/>
</attributes>
</classpathentry>
<classpathentry kind="src" path=".apt_generated">
<attributes>
<attribute name="optional" value="true"/>
</attributes>
</classpathentry>
<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/WebSphere Application Server v7.0 JRE">
<attributes>
<attribute name="owner.project.facets" value="java"/>
</attributes>
</classpathentry>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/misc3rdParty/antlr-2.7.6.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/misc3rdParty/aspectjweaver-1.6.8.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/buisnessObjects/cecore.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/buisnessObjects/celib.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/buisnessObjects/ceplugins_client.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/buisnessObjects/ceplugins_core.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/buisnessObjects/ceplugins_cr.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/buisnessObjects/cereports.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/buisnessObjects/cesession.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/buisnessObjects/ceutils.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/misc3rdParty/cglib-nodep-2.2.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/misc3rdParty/aopalliance-1.0.0.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/apache-commons/commons-beanutils.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/apache-commons/commons-collections-3.2.1.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/apache-commons/commons-lang-2.4.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/apache-commons/commons-logging-1.1.1.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/buisnessObjects/corbaidl.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/misc3rdParty/dom4j-1.6.1.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/buisnessObjects/ebus405.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/hibernate/hibernate-3.5.1/hibernate3.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/misc3rdParty/icu4j-3.4.4.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/misc3rdParty/jasypt-1.7.1.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/misc3rdParty/javassist-3.9.0.GA.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/misc3rdParty/joda-time-1.6.1.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/misc3rdParty/jpa-api-2.0-cr-1.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/misc3rdParty/junit-4.8.2.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/misc3rdParty/log4j-1.2.5.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/buisnessObjects/logging.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/spring/spring-framework-3.0.1/org.springframework.aop-3.0.1.RELEASE-A.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/spring/spring-framework-3.0.1/org.springframework.asm-3.0.1.RELEASE-A.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/spring/spring-framework-3.0.1/org.springframework.aspects-3.0.1.RELEASE-A.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/spring/spring-framework-3.0.1/org.springframework.beans-3.0.1.RELEASE-A.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/spring/spring-framework-3.0.1/org.springframework.context.support-3.0.1.RELEASE-A.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/spring/spring-framework-3.0.1/org.springframework.context-3.0.1.RELEASE-A.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/spring/spring-framework-3.0.1/org.springframework.core-3.0.1.RELEASE-A.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/spring/spring-framework-3.0.1/org.springframework.expression-3.0.1.RELEASE-A.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/spring/spring-framework-3.0.1/org.springframework.instrument.tomcat-3.0.1.RELEASE-A.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/spring/spring-framework-3.0.1/org.springframework.instrument-3.0.1.RELEASE-A.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/spring/spring-framework-3.0.1/org.springframework.jdbc-3.0.1.RELEASE-A.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/spring/spring-framework-3.0.1/org.springframework.jms-3.0.1.RELEASE-A.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/spring/spring-framework-3.0.1/org.springframework.orm-3.0.1.RELEASE-A.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/spring/spring-framework-3.0.1/org.springframework.oxm-3.0.1.RELEASE-A.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/spring/spring-framework-3.0.1/org.springframework.test-3.0.1.RELEASE-A.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/spring/spring-framework-3.0.1/org.springframework.transaction-3.0.1.RELEASE-A.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/spring/spring-framework-3.0.1/org.springframework.web.portlet-3.0.1.RELEASE-A.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/spring/spring-framework-3.0.1/org.springframework.web.servlet-3.0.1.RELEASE-A.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/spring/spring-framework-3.0.1/org.springframework.web.struts-3.0.1.RELEASE-A.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/spring/spring-framework-3.0.1/org.springframework.web-3.0.1.RELEASE-A.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/misc3rdParty/poi-3.7-beta3-20100924.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/misc3rdParty/serialization.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/misc3rdParty/SL_plugins.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/misc3rdParty/slf4j-api-1.5.8.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/misc3rdParty/slf4j-log4j12-1.5.8.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/wicket/wicket-1.4.7/wicket-1.4.7.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/wicket/wicket-1.4.7/wicket-auth-roles-1.4.7.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/wicket/wicket-1.4.7/wicket-datetime-1.4.7.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/wicket/wicket-1.4.7/wicket-devutils-1.4.7.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/wicket/wicket-1.4.7/wicket-extensions-1.4.7.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/wicket/wicket-1.4.7/wicket-guice-1.4.7.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/wicket/wicket-1.4.7/wicket-ioc-1.4.7.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/wicket/wicket-1.4.7/wicket-jmx-1.4.7.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/wicket/wicket-1.4.7/wicket-objectsizeof-agent-1.4.7.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/wicket/wicket-1.4.7/wicket-spring-1.4.7.jar"/>
<classpathentry kind="lib" path="C:/views/SharedComp_Development/SharedComp_Software/jar/wicket/wicket-1.4.7/wicket-velocity-1.4.7.jar"/>
<classpathentry kind="output" path="bin"/>
</classpath>