I'm using 7.0.4728.16930. Took it from a jsFiddle example for jQuery that was posted in another thread here.
Just download the new version (7.1.5044.21402) and it works with the newer jQuery UI version!
BTW: For those who want to download the full version instead of using many smaller js files, this is the link to the newer version:
http://www.jchartfx.com/jChartFX/7.1.5044.21402/jchartfx.full.js
I think this URL should be visible in the downloads area. When you download the zip it has the fragments js files.
I might be wrong and may have missed it, but for jchartfx noobs the full js is much easier to start with.
Thanks,
Yuval