SB was running fine for both the client and the admin modules until WP 2.8 was applied.

The sermon list section of the admin module would appear to work fine even after 2.8 was installed – that I was able to edit a sermon etc. But if I hit 'Next', depending on the browser I'd get either a javascript error or no action. This means that I was not able to manage 'older' sermons.

Upon further investigation the javascript error occurred when it was doing function fetch() in sermon.php. It was doing some jquery commands. Eventually I replaced the entire /wp-includes/js/jquery/ folder with the one that came with WP 2.7.1. Immediately afterwards the SB sermon list module (among other things) worked without errors.

Thanks for the attention.