i deployed my ear sucessfully but am unable to fire the rules.

am getting the below error can any one help me out..  when i try to run the rules it is going "org.eclipse.jdt.internal.compiler.env.INameEnvironment".

18:38:08,004 ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[default-host].[/test/app].[]] (http-localhost-127.0.0.1-8080-3) Servlet.service() for servlet com.servlets.DetailsServlet threw exception: java.lang.ClassNotFoundException: org.eclipse.jdt.internal.compiler.env.INameEnvironment from [Module "deployment.EAR.ear:main" from Service Module Loader]
at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:190)
at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:468)
at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:456)
at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:423)
at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398)
at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:120)
at java.lang.Class.forName0(Native Method) [rt.jar:1.6.0_33]
at java.lang.Class.forName(Unknown Source) [rt.jar:1.6.0_33]
at org.drools.commons.jci.compilers.JavaCompilerFactory.createCompiler(JavaCompilerFactory.java:75) [drools-compiler-5.1.1.jar:5.1.1]
at org.drools.rule.builder.dialect.java.JavaDialect.loadCompiler(JavaDialect.java:674) [drools-compiler-5.1.1.jar:5.1.1]
at org.drools.rule.builder.dialect.java.JavaDialect.<init>(JavaDialect.java:169) [drools-compiler-5.1.1.jar:5.1.1]
at org.drools.rule.builder.dialect.java.JavaDialectConfiguration.newDialect(JavaDialectConfiguration.java:65) [drools-compiler-5.1.1.jar:5.1.1]
at org.drools.compiler.PackageBuilderConfiguration.buildDialectRegistry(PackageBuilderConfiguration.java:300) [drools-compiler-5.1.1.jar:5.1.1]
at org.drools.compiler.PackageRegistry.<init>(PackageRegistry.java:24) [drools-compiler-5.1.1.jar:5.1.1]
at org.drools.compiler.PackageBuilder.newPackage(PackageBuilder.java:864) [drools-compiler-5.1.1.jar:5.1.1]
at org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:577) [drools-compiler-5.1.1.jar:5.1.1]
at org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:266) [drools-compiler-5.1.1.jar:5.1.1]
at org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:458) [drools-compiler-5.1.1.jar:5.1.1]
at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28) [drools-compiler-5.1.1.jar:5.1.1]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:754) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [jboss-servlet-api_3.0_spec-1.0.0.Final.jar:1.0.0.Final]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) [jbossweb-7.0.13.Final.jar:]
at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153) [jboss-as-web-7.1.1.Final.jar:7.1.1.Final]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [jbossweb-7.0.13.Final.jar:]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368) [jbossweb-7.0.13.Final.jar:]
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [jbossweb-7.0.13.Final.jar:]
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671) [jbossweb-7.0.13.Final.jar:]
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930) [jbossweb-7.0.13.Final.jar:]
at java.lang.Thread.run(Unknown Source) [rt.jar:1.6.0_33]