Confused about jQuery UI Builds and Themes and Customer Builds

Confused about jQuery UI Builds and Themes and Customer Builds


I've download "Start" UI Theme and run the Demo and it works fine. If
I replace jquery.ui.all.js (304KB) that comes with the "Start" Theme
download with jquery.ui.all.js that comes with the normal jQuery UI
download (275KB) the Tabs, Accordion, Dialog etc. don't work.
Further I've created a page that just uses UI/Tabs and built a Custom
Download with just Tabs and UI Core. The Tabs don't work with this. If
instead I use the jquery.ui.all.js that came with the "Start" Theme
the page works.
So:
1) Why are there two different jquery.ui.all.js libraries?
2) How can I use a Custom Download (ex. UI/Tabs) with a Theme such as
"Start"?
Thanks,
Neville, http://www.surfulater.com