From 83a4fbaf489eb5c3cd3bb52408f007f864523f44 Mon Sep 17 00:00:00 2001
From: Heng Sin Low <hengsin@gmail.com>
Date: Fri, 1 Jun 2012 01:46:26 +0800
Subject: [PATCH] IDEMPIERE-284 zk: Moving tree item using drag and drop
 sometime throw NPE

---
 .../src/org/adempiere/webui/component/ADTreeOnDropListener.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/component/ADTreeOnDropListener.java b/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/component/ADTreeOnDropListener.java
index 52fb0bb6ba..e6888c84f5 100644
--- a/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/component/ADTreeOnDropListener.java
+++ b/org.adempiere.ui.zk/WEB-INF/src/org/adempiere/webui/component/ADTreeOnDropListener.java
@@ -147,7 +147,7 @@ public class ADTreeOnDropListener implements EventListener {
 		treeModel.addNode(newParent, movingNode, index);
 		
 		int path[] = treeModel.getPath(movingNode);
-		if (TreeUtils.isOnInitRenderPosted(tree))
+		if (TreeUtils.isOnInitRenderPosted(tree) || tree.getTreechildren() == null)
 		{
 			tree.onInitRender();
 		}