From 9ea82bb6cd4c15082614e84a1090556da43b4b3b Mon Sep 17 00:00:00 2001
From: Dan Stillman <dstillman@zotero.org>
Date: Fri, 3 Mar 2017 16:39:37 -0500
Subject: [PATCH] Fix potential error dragging attachment with missing file

---
 chrome/content/zotero/xpcom/attachments.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chrome/content/zotero/xpcom/attachments.js b/chrome/content/zotero/xpcom/attachments.js
index 4761318e8c..0f0fab07fe 100644
--- a/chrome/content/zotero/xpcom/attachments.js
+++ b/chrome/content/zotero/xpcom/attachments.js
@@ -1092,7 +1092,7 @@ Zotero.Attachments = new function(){
 		yield newAttachment.save();
 		
 		// Copy over files if they exist
-		if (newAttachment.isImportedAttachment() && attachment.getFile()) {
+		if (newAttachment.isImportedAttachment() && (yield attachment.fileExists())) {
 			let dir = Zotero.Attachments.getStorageDirectory(attachment);
 			let newDir = yield Zotero.Attachments.createDirectoryForItem(newAttachment);
 			yield Zotero.File.copyDirectory(dir, newDir);