Christine,
I'm seeing the error you mention, but the error is located in a different file that you seem to be mentioning. Testing in Chrome and Firefox, I get the error as shown below:
As you can see the error is the same you mention, " $(element).store is not a function ". However, it's coming from /components/com_rseventspro/assets/js/GrowingInput.js?v=3 file. Where are you seeing that this is coming from the all.js file?
Regardless though, the all.js file is the Facebook Javascript library file. JFBConnect is the extension that is telling the browser to load that file on your page, but it's loaded from Facebook itself. We have absolutely no control over that file. So, if it is causing the conflict, there it would be either up to Facebook to fix (probably unlikely, but we can tell you how to submit a bug report to them) or it would be on RSEvents to be compatible with Facebook's Javascript library. I can't see anywhere that the all.js file is the problem as you mention, but if it is, that's not going to be easy to fix on our end at all.
Let me know if I'm seeing a different Javascript error than you or if there's anything else we can help test or look into.
Thanks,
Alex