From ad5140a23eed08222e66477e59f6d3f4b68c2701 Mon Sep 17 00:00:00 2001
From: MoMeak <MoMeak@fanruan.com>
Date: Tue, 29 Aug 2017 10:10:10 +0800
Subject: [PATCH] =?UTF-8?q?REPORT-4004=20[9.0=E4=B8=80=E8=BD=AE=E5=9B=9E?=
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---
 .../src/com/fr/design/parameter/ParameterPropertyPane.java      | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/designer_form/src/com/fr/design/parameter/ParameterPropertyPane.java b/designer_form/src/com/fr/design/parameter/ParameterPropertyPane.java
index 9404964a6..51d73b90d 100644
--- a/designer_form/src/com/fr/design/parameter/ParameterPropertyPane.java
+++ b/designer_form/src/com/fr/design/parameter/ParameterPropertyPane.java
@@ -83,7 +83,7 @@ public class ParameterPropertyPane extends JPanel{
 	}
 
     public void setAddParaPaneVisible(boolean isVisible) {
-        if (isVisible == addParaPane.isVisible()) {
+        if (isVisible == addParaPane.isVisible() || formHierarchyTreePaneWrapper == null) {
             return;
         }
         if (isVisible && toolbarPane.hasSelectedLabelItem()) {