I'm sorry, but an uncaught exception occurred.

After loading the script.
UnicodeDecodeError: 'utf8' codec can't decode byte 0xe0 in position 7: invalid continuation byte

-- Full Traceback ------------------------------------------------------------

Full traceback:
  File "renpy/bootstrap.py", line 326, in bootstrap
    renpy.main.main()
  File "renpy/main.py", line 461, in main
    game.persistent = renpy.persistent.init()
  File "renpy/persistent.py", line 223, in init
    filename = os.path.join(renpy.config.savedir, "persistent.new")
  File "/home/tom/ab/renpy-build/tmp/install.linux-x86_64/lib/python2.7/ntpath.py", line 85, in join
UnicodeDecodeError: 'utf8' codec can't decode byte 0xe0 in position 7: invalid continuation byte