From 22c8194cc8fde88957dbc8c6d9e253fac3c637bb Mon Sep 17 00:00:00 2001
From: Arthur Schiwon <blizzz@owncloud.com>
Date: Tue, 2 Apr 2013 16:25:12 +0200
Subject: [PATCH] fix upgrade error for instances not upgraded from 4.5

---
 core/ajax/update.php | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/core/ajax/update.php b/core/ajax/update.php
index e40d0def4e4..3154c2e305c 100644
--- a/core/ajax/update.php
+++ b/core/ajax/update.php
@@ -36,11 +36,15 @@ if (OC::checkUpgrade(false)) {
  * @param UpdateWatcher $watcher
  */
 function __doFileCacheUpgrade($watcher) {
-	$query = \OC_DB::prepare('
-		SELECT DISTINCT user
-		FROM`*PREFIX*fscache`
-	');
-	$result = $query->execute();
+	try {
+		$query = \OC_DB::prepare('
+			SELECT DISTINCT user
+			FROM`*PREFIX*fscache`
+		');
+		$result = $query->execute();
+	} catch (\Exception $e) {
+		return;
+	}
 	$users = $result->fetchAll();
 	if(count($users) == 0) {
 		return;
-- 
2.39.5