IPython crashes when enabled with %pudb about pudb HOT 1 OPEN

Traceback (most recent call last):
  File "./pudb/__init__.py", line 73, in runscript
    dbg._runscript(mainpyfile)
  File "./pudb/debugger.py", line 341, in _runscript
    self.run(statement, globals=globals_, locals=locals_)
  File "/Users/aaronmeurer/anaconda3/envs/ipython0.13/lib/python3.3/bdb.py", line 405, in run
    exec(cmd, globals, locals)
  File "<string>", line 1, in <module>
  File "/Users/aaronmeurer/Documents/pudb/test.py", line 1, in <module>
    import time
  File "/Users/aaronmeurer/Documents/pudb/test.py", line 1, in <module>
    import time
  File "/Users/aaronmeurer/anaconda3/envs/ipython0.13/lib/python3.3/bdb.py", line 47, in trace_dispatch
    return self.dispatch_line(frame)
  File "/Users/aaronmeurer/anaconda3/envs/ipython0.13/lib/python3.3/bdb.py", line 65, in dispatch_line
    self.user_line(frame)
  File "./pudb/debugger.py", line 293, in user_line
    self.interaction(frame)
  File "./pudb/debugger.py", line 261, in interaction
    show_exc_dialog=show_exc_dialog)
  File "./pudb/debugger.py", line 1392, in call_with_ui
    return f(*args, **kwargs)
  File "./pudb/debugger.py", line 1558, in interaction
    self.event_loop()
  File "./pudb/debugger.py", line 1524, in event_loop
    toplevel.keypress(self.size, k)
  File "./pudb/ui_tools.py", line 87, in keypress
    return handler(self, size, key)
  File "./pudb/debugger.py", line 1094, in run_shell
    first_shell_run)
  File "./pudb/shell.py", line 121, in run_ipython_shell_v11
    banner2=banner)
  File "/Users/aaronmeurer/anaconda3/envs/ipython0.13/lib/python3.3/site-packages/IPython/config/configurable.py", line 360, in instance
    '%s are being created.' % cls.__name__
IPython.config.configurable.MultipleInstanceError: Multiple incompatible subclass instances of TerminalInteractiveShell are being created.