From 5f66482537d2e5bfce451f71fae138b3302fb6c3 Mon Sep 17 00:00:00 2001
From: Simon Kornblith <simon@simonster.com>
Date: Sun, 25 Nov 2012 16:03:55 -0500
Subject: [PATCH] Ensure arrays exist in ZU.itemToExportFormat()

---
 chrome/content/zotero/xpcom/utilities.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/chrome/content/zotero/xpcom/utilities.js b/chrome/content/zotero/xpcom/utilities.js
index db34c654b..f9b9b8f27 100644
--- a/chrome/content/zotero/xpcom/utilities.js
+++ b/chrome/content/zotero/xpcom/utilities.js
@@ -1169,6 +1169,12 @@ Zotero.Utilities = {
 	 * uniqueFields array
 	 */
 	"itemToExportFormat":function(item) {
+		const CREATE_ARRAYS = ['creators', 'notes', 'tags', 'seeAlso', 'attachments'];
+		for(var i=0; i<CREATE_ARRAYS.length; i++) {
+			var createArray = CREATE_ARRAYS[i];
+			if(!item[createArray]) item[createArray] = [];
+		}
+		
 		item.uniqueFields = {};
 		
 		// get base fields, not just the type-specific ones