+### ERROR: unable to download video ###
+
+youtube requires an additional signature since September 2012 which is not supported by old versions of youtube-dl. You can update youtube-dl with `sudo youtube-dl --update`.
+
+### SyntaxError:Non-ASCII character ###
+
+The error
+
+ File "youtube-dl", line 2
+ SyntaxError: Non-ASCII character '\x93' ...
+
+means you're using an outdated version of Python. Please update to Python 2.6 or 2.7.
+
+To run youtube-dl under Python 2.5, you'll have to manually check it out like this:
+
+ git clone git://github.com/rg3/youtube-dl.git
+ cd youtube-dl
+ python -m youtube-dl --help
+
+Please note that Python 2.5 is not supported anymore.
+