Hans,
If you read the Pyramid book, then in the first pages, I explain how you get the "plus" BC.
Also, regarding the "ticker" error on the BC, this comes either from an internet connectivity issue or from the fact that Yahoo Finance does not support historical data for that ticker.
If you can manually obtain data from Yahoo finance, then you'll get the data on the BC, because the BC uses the Yahoo historical API. For example, Yahoo Finance does not support historical data for European, Japanese, Australian, HK, Korean companies.
Pascal