Hi Tim,
This is a known issue. It is a good security practice to password protect your admin folder. Unfortunately, JBS references some helper files that are on the admin side.
If you go to this post:
www.joomlabiblestudy.org/forums/10-usage...entication.html#1795
Towards the bottom you will see a temporary solution.
Version 6.2 will have the files located on the component side so this won't be an issue. Until then this is the answer.
What you are missing are mostly css files or js I think - nothing crucial.
Tom