list index out of range

(Before simply reloading this page) please PM me this error message, and the stacktrace:

Traceback (most recent call last):
  File "", line 59, in priceladder_page
  File "./", line 269, in getdata_makehtmlpage_savetofile
    alldata = ladder.getdata_combine_exchange_prices_and_laddersteps(debug=debug)
  File "./", line 223, in getdata_combine_exchange_prices_and_laddersteps
    rates, forex_created = forex_data [0] # [0] because they were in a list, simply as a thread safe container
IndexError: list index out of range