diff --git a/deluge/core/torrentmanager.py b/deluge/core/torrentmanager.py
index e4730347a..412d3553c 100644
--- a/deluge/core/torrentmanager.py
+++ b/deluge/core/torrentmanager.py
@@ -592,9 +592,13 @@ class TorrentManager(component.Component):
             if torrent_info:
                 magnet = None
 
-            d = self.add(torrent_info=torrent_info, state=t_state, options=options, save_state=False,
-                         magnet=magnet, resume_data=resume_data.get(t_state.torrent_id))
-            deferreds.append(d)
+            try:
+                d = self.add(torrent_info=torrent_info, state=t_state, options=options, save_state=False,
+                             magnet=magnet, resume_data=resume_data.get(t_state.torrent_id))
+            except AddTorrentError as ex:
+                log.warn("Error when adding torrent '%s' to session: %s", t_state.torrent_id, ex)
+            else:
+                deferreds.append(d)
 
         deferred_list = DeferredList(deferreds, consumeErrors=False)