From 33c19715a83a80463ffdf693d490c0142ac845f9 Mon Sep 17 00:00:00 2001
From: Dan Stillman <dstillman@zotero.org>
Date: Mon, 8 Jun 2015 04:27:45 -0400
Subject: [PATCH] Avoid error when dragging over header row

---
 chrome/content/zotero/xpcom/collectionTreeView.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/chrome/content/zotero/xpcom/collectionTreeView.js b/chrome/content/zotero/xpcom/collectionTreeView.js
index 494813428..0391a894f 100644
--- a/chrome/content/zotero/xpcom/collectionTreeView.js
+++ b/chrome/content/zotero/xpcom/collectionTreeView.js
@@ -2209,7 +2209,8 @@ Zotero.CollectionTreeRow.prototype.isShare = function()
 
 // Special
 Zotero.CollectionTreeRow.prototype.isWithinGroup = function () {
-	return this.ref && Zotero.Libraries.getType(this.ref.libraryID) == 'group';
+	return this.ref && !this.isHeader()
+		&& Zotero.Libraries.getType(this.ref.libraryID) == 'group';
 }
 
 Zotero.CollectionTreeRow.prototype.isWithinEditableGroup = function () {