print traceback on trouble if --verbose (why didn't I think of this before!?)

1 files changed, 3 insertions, 0 deletions

diff --git a/youtube_dl/FileDownloader.py b/youtube_dl/FileDownloader.py
index aad12fc1f..b43acd19b 100644
--- a/youtube_dl/FileDownloader.py
+++ b/youtube_dl/FileDownloader.py
@@ -10,6 +10,7 @@ import socket
 import subprocess
 import sys
 import time
+import traceback
 
 if os.name == 'nt':
     import ctypes
@@ -217,6 +218,8 @@ class FileDownloader(object):
         """
         if message is not None:
             self.to_stderr(message)
+        if self.params.get('verbose'):
+            self.to_stderr(u''.join(traceback.format_list(traceback.extract_stack())))
         if not self.params.get('ignoreerrors', False):
             raise DownloadError(message)
         self._download_retcode = 1