gistfile1.txt

2012-03-18 19:54:11  Welcome to Minecraft Overviewer!
2012-03-18 19:54:18 E An error has occurred. This may be a bug. Please let us know!
See http://docs.overviewer.org/en/latest/index.html#help

This is the error that occurred:
Traceback (most recent call last):
  File "./overviewer.py", line 451, in <module>
    ret = main()
  File "./overviewer.py", line 400, in main
    dispatch.render_all(tilesets)
  File "/Users/agrif/devel/minecraft/overviewer/overviewer_core/dispatcher.py", line 83, in render_all
    self.observer = self.observer_type(total_jobs)
  File "/Users/agrif/devel/minecraft/overviewer/overviewer_core/dispatcher.py", line 499, in __init__
    widgets=widgets, term_width=term_width, fd=fd)
  File "/Users/agrif/devel/minecraft/overviewer/overviewer_core/progressbar.py", line 219, in __init__
    assert maxval > 0
AssertionError