Add a file exists check to torrents passed as arg

deluge/ui/gtkui/ipcinterface.py

@@ -219,6 +219,10 @@ def process_args(args):
         else:
             # Just a file
             log.debug("Attempting to add %s from external source..", arg)
+            if not os.path.exists(arg):
+                log.error("No such file: %s", arg)
+                continue
+
             if config["interactive_add"]:
                 component.get("AddTorrentDialog").add_from_files([arg])
                 component.get("AddTorrentDialog").show(config["focus_add_dialog"])

deluge/ui/gtkui/queuedtorrents.py

@@ -190,6 +190,10 @@ class QueuedTorrents(component.Component):
                 else:
                     client.core.add_magnet_uris([torrent_path], [])
             else:
+                if not os.path.exists(torrent_path):
+                    log.error("No such file: %s", torrent_path)
+                    return
+
                 if self.config["interactive_add"]:
                     def on_show(result):
                         component.get("AddTorrentDialog").add_from_files([torrent_path])