Unable to load descriptor

My Stacktrace
Warning: <May 26, 2013 7:47:48 AM CAT> <Error> <J2EE> <BEA-160197> <Unable to load descriptor {path}\ViewController\public_html/WEB-INF/weblogic.xml of module public_html. The error is weblogic.descriptor.DescriptorException: Unmarshaller failed at weblogic.descriptor.internal.MarshallerFactory$1.createDescriptor(MarshallerFactory.java:161) at weblogic.descriptor.BasicDescriptorManager.createDescriptor(BasicDescriptorManager.java:323) at weblogic.application.descriptor.AbstractDescriptorLoader2.getDescriptorBeanFromReader(AbstractDescriptorLoader2.java:788) at weblogic.application.descriptor.AbstractDescriptorLoader2.createDescriptorBean(AbstractDescriptorLoader2.java:409) at weblogic.application.descriptor.AbstractDescriptorLoader2.loadDescriptorBeanWithoutPlan(AbstractDescriptorLoader2.java:759) at weblogic.application.descriptor.AbstractDescriptorLoader2.loadDescriptorBean(AbstractDescriptorLoader2.java:768) at weblogic.servlet.internal.WebAppDescriptor.getWeblogicWebAppBean(WebAppDescriptor.java:170) at weblogic.servlet.utils.WarUtils.getWlWebAppBean(WarUtils.java:110) at weblogic.application.compiler.WARModule.processLibraries(WARModule.java:385) at weblogic.application.compiler.WARModule.compile(WARModule.java:237) at weblogic.application.compiler.flow.SingleModuleCompileFlow.proecessModule(SingleModuleCompileFlow.java:18) at weblogic.application.compiler.flow.SingleModuleFlow.compile(SingleModuleFlow.java:36) at weblogic.application.compiler.FlowDriver$FlowStateChange.next(FlowDriver.java:69) at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:52) at weblogic.application.compiler.FlowDriver.nextState(FlowDriver.java:36) at weblogic.application.compiler.FlowDriver.run(FlowDriver.java:26) at weblogic.application.compiler.WARCompiler.compile(WARCompiler.java:29) at weblogic.application.compiler.flow.AppCompilerFlow.compileInput(AppCompilerFlow.java:112) at weblogic.application.compiler.flow.AppCompilerFlow.compile(AppCompilerFlow.java:37) at weblogic.application.compiler.FlowDriver$FlowStateChange.next(FlowDriver.java:69) at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:52) at weblogic.application.compiler.FlowDriver.nextState(FlowDriver.java:36) at weblogic.application.compiler.FlowDriver.run(FlowDriver.java:26) at weblogic.application.compiler.Appc.runBody(Appc.java:203) at weblogic.utils.compiler.Tool.run(Tool.java:158) at weblogic.utils.compiler.Tool.run(Tool.java:115) at weblogic.application.compiler.Appc.main(Appc.java:262) at weblogic.appc.main(appc.java:14)Caused by: com.bea.xml.XmlException: weblogic.descriptor.BeanAlreadyExistsException: Bean already exists: "weblogic.j2ee.descriptor.wl.SecurityRoleAssignmentBeanImpl@563d3221(/SecurityRoleAssignments[valid-users])" at com.bea.staxb.runtime.internal.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:54) at com.bea.staxb.runtime.internal.RuntimeBindingType$BeanRuntimeProperty.setValue(RuntimeBindingType.java:539) at com.bea.staxb.runtime.internal.AttributeRuntimeBindingType$QNameRuntimeProperty.fillCollection(AttributeRuntimeBindingType.java:381) at com.bea.staxb.runtime.internal.MultiIntermediary.getFinalValue(MultiIntermediary.java:52) at com.bea.staxb.runtime.internal.AttributeRuntimeBindingType.getFinalObjectFromIntermediary(AttributeRuntimeBindingType.java:140) at com.bea.staxb.runtime.internal.UnmarshalResult.unmarshalBindingType(UnmarshalResult.java:200) at com.bea.staxb.runtime.internal.UnmarshalResult.unmarshalDocument(UnmarshalResult.java:169) at com.bea.staxb.runtime.internal.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:65) at weblogic.descriptor.internal.MarshallerFactory$1.createDescriptor(MarshallerFactory.java:150) ... 27 moreCaused by: weblogic.descriptor.BeanAlreadyExistsException: Bean already exists: "weblogic.j2ee.descriptor.wl.SecurityRoleAssignmentBeanImpl@563d3221(/SecurityRoleAssignments[valid-users])" at weblogic.descriptor.internal.ReferenceManager.registerBean(ReferenceManager.java:231) at weblogic.j2ee.descriptor.wl.WeblogicWebAppBeanImpl.setSecurityRoleAssignments(WeblogicWebAppBeanImpl.java:317) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at com.bea.staxb.runtime.internal.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:48) ... 35 more.>

In essence, the error was that I had two of the same library references in my weblogic-application.xml 

you can get there by going to your Application Resources in your resource pallet