java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at java.lang.Integer.compareTo(Integer.java:1019)
at com.openmarket.xcelerate.asset.DependentAsset.compareTo(DependentAsset.java:79)
at java.util.Arrays.mergeSort(Arrays.java:1167)
at java.util.Arrays.mergeSort(Arrays.java:1155)
at java.util.Arrays.sort(Arrays.java:1079)
at com.openmarket.xcelerate.asset.DependentAssetSet.getList(DependentAssetSet.java:389)
at com.openmarket.xcelerate.asset.Asset.getPubDeps(Asset.java:794)
at com.openmarket.xcelerate.commands.AssetDispatcher.GetPubDeps(AssetDispatcher.java:1670)
at sun.reflect.GeneratedMethodAccessor1477.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.openmarket.framework.commands.Dispatcher.Execute(Dispatcher.java:145)
at COM.FutureTense.XML.Template.DynTag.execute(DynTag.java:269)
at COM.FutureTense.XML.Template.BlockTag.execute(BlockTag.java:144)
at COM.FutureTense.XML.Template.BlockTag.execute(BlockTag.java:120)
at COM.FutureTense.XML.Template.IfChild.execute(BlockTag.java:397)
at COM.FutureTense.XML.Template.IFTag.execute(BlockTag.java:496)
at COM.FutureTense.XML.Template.BlockTag.execute(BlockTag.java:144)
at COM.FutureTense.XML.Template.BlockTag.execute(BlockTag.java:120)
at COM.FutureTense.XML.Template.Root.execute(BlockTag.java:365)
at COM.FutureTense.XML.Template.XMLEval.run(XMLEval.java:331)
at COM.FutureTense.Common.ContentServer.evalTheXML(ContentServer.java:3311)
at COM.FutureTense.Common.ContentServer.evalTemplate(ContentServer.java:2551)
at COM.FutureTense.Common.ContentServer.processElement(ContentServer.java:1999)
at COM.FutureTense.XML.Template.CallElement.execute(CallTag.java:253)
at COM.FutureTense.XML.Template.BlockTag.execute(BlockTag.java:144)
at COM.FutureTense.XML.Template.BlockTag.execute(BlockTag.java:120)
at COM.FutureTense.XML.Template.IfChild.execute(BlockTag.java:397)
at COM.FutureTense.XML.Template.IFTag.execute(BlockTag.java:496)
at COM.FutureTense.XML.Template.BlockTag.execute(BlockTag.java:144)
at COM.FutureTense.XML.Template.BlockTag.execute(BlockTag.java:120)
at COM.FutureTense.XML.Template.LoopTag.execute(BlockTag.java:756)
at COM.FutureTense.XML.Template.BlockTag.execute(BlockTag.java:144)
at COM.FutureTense.XML.Template.BlockTag.execute(BlockTag.java:120)
at COM.FutureTense.XML.Template.IfChild.execute(BlockTag.java:397)
at COM.FutureTense.XML.Template.IFTag.execute(BlockTag.java:496)
at COM.FutureTense.XML.Template.BlockTag.execute(BlockTag.java:144)
at COM.FutureTense.XML.Template.BlockTag.execute(BlockTag.java:120)
at COM.FutureTense.XML.Template.IfChild.execute(BlockTag.java:397)
at COM.FutureTense.XML.Template.IFTag.execute(BlockTag.java:496)
at COM.FutureTense.XML.Template.BlockTag.execute(BlockTag.java:144)
at COM.FutureTense.XML.Template.BlockTag.execute(BlockTag.java:120)
at COM.FutureTense.XML.Template.Root.execute(BlockTag.java:365)
at COM.FutureTense.XML.Template.XMLEval.run(XMLEval.java:331)
at COM.FutureTense.Common.ContentServer.evalTheXML(ContentServer.java:3311)
at COM.FutureTense.Common.ContentServer.evalTemplate(ContentServer.java:2551)
at COM.FutureTense.Common.ContentServer.processElement(ContentServer.java:1999)
at COM.FutureTense.XML.Template.CallElement.execute(CallTag.java:253)
at COM.FutureTense.XML.Template.BlockTag.execute(BlockTag.java:144)
at COM.FutureTense.XML.Template.BlockTag.execute(BlockTag.java:120)
at COM.FutureTense.XML.Template.IfChild.execute(BlockTag.java:397)
at COM.FutureTense.XML.Template.IFTag.execute(BlockTag.java:496)
at COM.FutureTense.XML.Template.BlockTag.execute(BlockTag.java:144)
at COM.FutureTense.XML.Template.BlockTag.execute(BlockTag.java:120)
at COM.FutureTense.XML.Template.IfChild.execute(BlockTag.java:397)
at COM.FutureTense.XML.Template.IFTag.execute(BlockTag.java:496)
at COM.FutureTense.XML.Template.BlockTag.execute(BlockTag.java:144)
at COM.FutureTense.XML.Template.BlockTag.execute(BlockTag.java:120)
at COM.FutureTense.XML.Template.Root.execute(BlockTag.java:365)
at COM.FutureTense.XML.Template.XMLEval.run(XMLEval.java:331)
at COM.FutureTense.Common.ContentServer.evalTheXML(ContentServer.java:3311)
at COM.FutureTense.Common.ContentServer.evalTemplate(ContentServer.java:2551)
at COM.FutureTense.Common.ContentServer.processElement(ContentServer.java:1999)
at COM.FutureTense.Common.CS.CallElement(CS.java:1603)
at com.fatwire.services.dao.helper.Tags.callElement(Tags.java:26)
at com.fatwire.services.ApprovalServiceImpl$2.run(ApprovalServiceImpl.java:160)
at com.fatwire.services.ApprovalServiceImpl$2.run(ApprovalServiceImpl.java:142)
at com.fatwire.services.helper.ServiceWrapper.run(ServiceWrapper.java:69)
at com.fatwire.services.ApprovalServiceImpl.approve(ApprovalServiceImpl.java:142)
at jsp_servlet._jsp._cs_deployed._ui._actions._asset._approve.__approveaction._jspService(__approveaction.java:168)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:34)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:301)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:184)
at weblogic.servlet.internal.RequestDispatcherImpl.invokeServlet(RequestDispatcherImpl.java:526)
at COM.FutureTense.Servlet.ServletRequest.include(ServletRequest.java:1410)
at COM.FutureTense.Servlet.FRequestObj.include(FRequestObj.java:1422)
at COM.FutureTense.Servlet.JSPServices.runJSP(JSPServices.java:111)
at COM.FutureTense.Platform.FileSystem.FILESYSTEMJSPManager.runJSP(FILESYSTEMJSPManager.java:463)
at COM.FutureTense.Servlet.JSPServices.runJSPObject(JSPServices.java:50)
at COM.FutureTense.Platform.FileSystem.FILESYSTEMJSPManager$JSPDataFile.run(FILESYSTEMJSPManager.java:190)
at COM.FutureTense.Common.ContentServer.jspExecute(ContentServer.java:3027)
at COM.FutureTense.Common.ContentServer.evalTemplate(ContentServer.java:2621)
at COM.FutureTense.Common.ContentServer.processElement(ContentServer.java:1999)
at COM.FutureTense.Common.CS.CallElement(CS.java:1603)
at com.fatwire.cs.ui.framework.UIController.execute(UIController.java:133)
at jsp_servlet._jsp._cs_deployed._fatwire._ui._controller.__controller._jspService(__controller.java:89)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:34)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:301)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:184)
at weblogic.servlet.internal.RequestDispatcherImpl.invokeServlet(RequestDispatcherImpl.java:526)
at COM.FutureTense.Servlet.ServletRequest.include(ServletRequest.java:1410)
at COM.FutureTense.Servlet.FRequestObj.include(FRequestObj.java:1422)
at COM.FutureTense.Servlet.JSPServices.runJSP(JSPServices.java:111)
at COM.FutureTense.Platform.FileSystem.FILESYSTEMJSPManager.runJSP(FILESYSTEMJSPManager.java:463)
at COM.FutureTense.Servlet.JSPServices.runJSPObject(JSPServices.java:50)
at COM.FutureTense.Platform.FileSystem.FILESYSTEMJSPManager$JSPDataFile.run(FILESYSTEMJSPManager.java:190)
at COM.FutureTense.Common.ContentServer.jspExecute(ContentServer.java:3027)
at COM.FutureTense.Common.ContentServer.evalTemplate(ContentServer.java:2621)
at COM.FutureTense.Common.ContentServer.generatePage(ContentServer.java:1640)
at COM.FutureTense.Common.ContentServer.evalPage(ContentServer.java:1276)
at COM.FutureTense.Common.ContentServer.execute(ContentServer.java:465)
at COM.FutureTense.Servlet.FTServlet.execute(FTServlet.java:129)
at COM.FutureTense.Servlet.FTServlet.doPost(FTServlet.java:61)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:301)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
at com.fatwire.auth.RequestAuthenticationFilter.doFilter(RequestAuthenticationFilter.java:193)
at COM.FutureTense.Servlet.URLRewriteFilter.doFilter(URLRewriteFilter.java:81)
at com.fatwire.wem.sso.cas.filter.CASFilter.doFilter(CASFilter.java:241)
at com.fatwire.wem.sso.SSOFilter.doFilter(SSOFilter.java:51)
at com.fatwire.cs.ui.framework.UIFilter.doFilter(UIFilter.java:108)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3730)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2273)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2179)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1490)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:256)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:221)

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