diff --git a/youtube_dlc/downloader/common.py b/youtube_dlc/downloader/common.py
index c65500d61..7d303be1c 100644
--- a/youtube_dlc/downloader/common.py
+++ b/youtube_dlc/downloader/common.py
@@ -364,8 +364,10 @@ class FileDownloader(object):
                         else '%.2f' % sleep_interval))
                 time.sleep(sleep_interval)
         else:
-            if self.params.get('sleep_interval_subtitles') > 0:
+            sleep_interval_sub = 0
+            if type(self.params.get('sleep_interval_subtitles')) is int:
                 sleep_interval_sub = self.params.get('sleep_interval_subtitles')
+            if sleep_interval_sub > 0:
                 self.to_screen(
                     '[download] Sleeping %s seconds...' % (
                         sleep_interval_sub))
diff --git a/youtube_dlc/downloader/youtube_live_chat.py b/youtube_dlc/downloader/youtube_live_chat.py
index 4932dd9c5..b333afa5b 100644
--- a/youtube_dlc/downloader/youtube_live_chat.py
+++ b/youtube_dlc/downloader/youtube_live_chat.py
@@ -82,7 +82,10 @@ class YoutubeLiveChatReplayFD(FragmentFD):
                         offset = int(replay_chat_item_action['videoOffsetTimeMsec'])
                     processed_fragment.extend(
                         json.dumps(action, ensure_ascii=False).encode('utf-8') + b'\n')
-                continuation_id = live_chat_continuation['continuations'][0]['liveChatReplayContinuationData']['continuation']
+                try:
+                    continuation_id = live_chat_continuation['continuations'][0]['liveChatReplayContinuationData']['continuation']
+                except KeyError:
+                    continuation_id = None
 
             self._append_fragment(ctx, processed_fragment)