diff --git a/resource/bluebird.js b/resource/bluebird.js
index 9c85e6e546..b4b8bc7772 100644
--- a/resource/bluebird.js
+++ b/resource/bluebird.js
@@ -4675,6 +4675,9 @@ function originatesFromRejection(e) {
 }
 
 function canAttachTrace(obj) {
+    // Added by Zotero
+    return obj.message && obj.stack && es5.propertyIsWritable(obj, "stack");
+    
     return obj instanceof Error && es5.propertyIsWritable(obj, "stack");
 }