Error ejecuntado bpython en ubuntu 12.04 3

Al ejecutar bpython bajo ubuntu 12.04 encontramos un feo error: Traceback (most recent call last): File "/usr/bin/bpython", line 9, in load_entry_point('bpython==0.10.1', 'console_scripts', 'bpython')() File "/usr/lib/python2.7/dist-packages/bpython/cli.py", line 1756, in main banner=banner) File "/usr/lib/python2.7/dist-packages/bpython/cli.py", line 1658, in curses_wrapper return func(stdscr, *args, **kwargs) File "/usr/lib/python2.7/dist-packages/bpython/cli.py", line 1701, in main_curses main_win, statusbar = init_wins(scr, config) File "/usr/lib/python2.7/dist-packages/bpython/cli.py", line 1549, ...