From 0c49350cdfa7d85fdaacda198fd41775e690fc7c Mon Sep 17 00:00:00 2001
From: Dan Stillman <dstillman@zotero.org>
Date: Thu, 13 Jul 2017 16:10:33 -0400
Subject: [PATCH] Fix startup error from empty 'collection' search condition

---
 chrome/content/zotero/xpcom/data/searches.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/chrome/content/zotero/xpcom/data/searches.js b/chrome/content/zotero/xpcom/data/searches.js
index acd0f3f47..d05a342c9 100644
--- a/chrome/content/zotero/xpcom/data/searches.js
+++ b/chrome/content/zotero/xpcom/data/searches.js
@@ -123,6 +123,11 @@ Zotero.Searches = function() {
 				// Parse "condition[/mode]"
 				let [conditionName, mode] = Zotero.SearchConditions.parseCondition(condition.condition);
 				
+				// Not sure how this can happen, but prevent an error if it does
+				if (condition.value === null) {
+					condition.value = '';
+				}
+				
 				let cond = Zotero.SearchConditions.get(conditionName);
 				if (!cond || cond.noLoad) {
 					Zotero.debug("Invalid saved search condition '" + conditionName + "' -- skipping", 2);