Null Pointer Exception in Landed Cost Posting

Posting Invoice (Vendor) with Landed Costs and without estimated Landed Costs from PO is causing null pointer exception.

Jun 09, 2015 3:34:27 PM org.compiere.acct.Doc post
SEVERE:
java.lang.NullPointerException
at org.compiere.acct.Doc_Invoice.landedCost(Doc_Invoice.java:991)
at org.compiere.acct.Doc_Invoice.createFacts(Doc_Invoice.java:507)
at org.compiere.acct.Doc.postLogic(Doc.java:640)
at org.compiere.acct.Doc.post(Doc.java:530)
at org.compiere.acct.DocManager.postDocument(DocManager.java:300)
at org.compiere.acct.DocManager.postDocument(DocManager.java:247)
at org.compiere.acct.Doc.postImmediate(Doc.java:238)
at org.adempiere.webui.apps.AEnv.postImmediate(AEnv.java:334)
at org.adempiere.webui.adwindow.AbstractADWindowContent$44.onCallback(AbstractADWindowContent.java:2873)
at org.adempiere.webui.adwindow.AbstractADWindowContent$44.onCallback(AbstractADWindowContent.java:1)
at org.adempiere.webui.window.FDialog$3.onCallback(FDialog.java:385)
at org.adempiere.webui.window.FDialog$3.onCallback(FDialog.java:1)
at org.adempiere.webui.component.Messagebox.onPageDetached(Messagebox.java:349)
at org.zkoss.zk.ui.AbstractComponent.setPage0(AbstractComponent.java:476)
at org.zkoss.zk.ui.AbstractComponent.setPageBefore(AbstractComponent.java:395)
at org.zkoss.zk.ui.AbstractComponent.setPage(AbstractComponent.java:360)
at org.zkoss.zk.ui.AbstractComponent.detach(AbstractComponent.java:1674)
at org.adempiere.webui.component.Messagebox.onEvent(Messagebox.java:340)
at org.zkoss.zk.ui.AbstractComponent.onEvent(AbstractComponent.java:2752)
at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2723)
at org.zkoss.zk.ui.AbstractComponent.service(AbstractComponent.java:2664)
at org.zkoss.zk.ui.impl.EventProcessor.process(EventProcessor.java:136)
at org.zkoss.zk.ui.impl.UiEngineImpl.processEvent(UiEngineImpl.java:1765)
at org.zkoss.zk.ui.impl.UiEngineImpl.process(UiEngineImpl.java:1550)
at org.zkoss.zk.ui.impl.UiEngineImpl.execUpdate(UiEngineImpl.java:1260)
at org.zkoss.zk.au.http.DHtmlUpdateServlet.process(DHtmlUpdateServlet.java:603)
at org.zkoss.zk.au.http.DHtmlUpdateServlet.doGet(DHtmlUpdateServlet.java:485)
at org.zkoss.zk.au.http.DHtmlUpdateServlet.doPost(DHtmlUpdateServlet.java:494)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:808)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:587)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:215)
at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
at org.eclipse.jetty.server.Server.handle(Server.java:497)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
at java.lang.Thread.run(Thread.java:745)