I’m not sure if anyone is still looking for support for this, but I got it working without any hassle on WP 2.8. “Markisrunning”‘s advice to check the order that you load the js/css is crucial. I got it working fine without resorting to killing the header.php and loading everything in index.php, but I had to load everything in this order: CSS > jcarousel scripts > activation script. Trial and error did the trick after that – I happen to be using Thematic and their wp-head(); code snippet was causing problems, so I just loaded all of the jcarousel related files at the end of the <head> section in the proper order. Cheers!
