Incompatibility issue?

Guy,
We've heard of this issue 2 other times over the last 6 months or so.. so it's very rare. In each case, we haven't been able to get nearly as much information as you've just provided. Thank you!

Without more information, it will be hard to diagnose, but you seem ready and willing to help. Mainly, we need to be able to recreate this problem on one of our development sites if possible. Can you let us know the information below? Just so you know, I'm not terribly familiar with the JomSocial Events stuff, so some of this may sound pretty rudimentary:
1) When you say "However, turning OFF the whole events extension did!", you mean the "Enable Events" setting in the Configuration -> Events area of JomSocial right?
2) When do you get this pop-up error? Is it only on specific pages, or any JomSocial page you visit? Can you give the URL (domain not necessary, mainly the /index.php? portion, if possible)
3) Any other configuration options or navigations paths that make this error popup would be great to have!

In the past, we've had to say "go talk to JomSocial about it".. which is true, since the error is in their extension.. it's very possible we wont' be able to fix the problem, but if we can narrow it down with your info, that would really help to make progress!

Thanks,
Alex

Guy,
That's definitely a good deduction on your part. Compressing the files really should be the problem (that usually just strips whitespace, but should functionally change anything). However, minification can do some crazy things and is likely the culprit. That will combine multiple Javascript files into one big file, which generally isn't bad, but dependencies, ordering problems, or other issues can easily arise when everything is mushed together.

I'd try re-enabling compression and see how that goes. Minification may just have to remain disabled though.

Definitely keep us posted on what you find,
Alex

Guy,
Thanks so much for your feedback. We'll definitely keep this post in mind if others ask, and may add it to our JomSocial common support questions area, at least as a starting point for the few users that seem to run into this. We really appreciate you're help since we haven't been able to recreate this, which makes it terribly difficult to make any progress toward a resolution.

Thanks again,
Alex