From f51cfed35c98ebc036784a28d3f2099979906204 Mon Sep 17 00:00:00 2001
From: "Alex A. Naanou" <alex.nanou@gmail.com>
Date: Fri, 12 Feb 2021 14:39:45 +0300
Subject: [PATCH] fix...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
---
 Viewer/features/filesystem.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Viewer/features/filesystem.js b/Viewer/features/filesystem.js
index ff7fda42..57b3f43f 100755
--- a/Viewer/features/filesystem.js
+++ b/Viewer/features/filesystem.js
@@ -2283,7 +2283,7 @@ var FileSystemWriterActions = actions.Actions({
 					// update previews...
 					// NOTE: this is needed if some of the previews are the 
 					// 		same as .path
-					Object.keys(img.preview)
+					Object.keys(img.preview || {})
 						.forEach(function(s){ 
 							var p = img.preview[s]
 							img.preview[s] = p == from_path ?