DL'd the newest python-telegram-bot on an Ubuntu Virtual Machine. Tried python example.

$ cd ~/python-telegram-bot/examples
$ python timerbot.py

Program seemed to properly initiate, the bot responded to /start as expected.
Entered /set 13 expecting to wait 13 seconds- no response. Checking back on terminal yeilded an error:

2016-04-29 11:38:22,002 - telegram.ext.dispatcher - ERROR - An uncaught error was raised while processing the update
Traceback (most recent call last):
  File "build/bdist.linux-i686/egg/telegram/ext/dispatcher.py", line 180, in processUpdate
    handler.handleUpdate(update, self)
  File "build/bdist.linux-i686/egg/telegram/ext/commandhandler.py", line 66, in handleUpdate
    self.callback(dispatcher.bot, update, **optional_args)
TypeError: set() takes exactly 3 arguments (2 given)

I dont think it passed the optional_args. This seems like a slightly large problem.

Fairly new to developing API, I could have my own knowledge to blame--- just mentioning it now before I start cracking down to edit a program which was just downloaded.