MIGX ext-all.js Error

I've not been able to use MIGX since 2.3 (currently using MODx v2.4.1, MIGX 2.9.6 with a patch to make it work in 2.4) because of a javascript error in the Manager after following the instruction to set up a gallery. Once I get to the step "Manage Your MIGX - Configs" tab, it gets an error and won't show anything in the grid. The error is:

From what I understand, this is bad XHR being returned, but I can't pin it down in Firebug.

The error happens right after "connectors/index.php?action=resource/getNodes&id=web_0&type=modContext" is loaded and right before the final "connectors/index.php" is loaded.

Anyway, until this is resolved, I can't use MIGX. Any help would be much appreciated, because MIGX is our swiss army knife, and without it, we are f-ed.

(It seems the further MODx progresses, the more the addons regress unfortunately)

any chance, I can have a look into you manager?

Hi Bruno,
About the best I can do is package everything up for you as I have it installed on my local web server. Better yet, I'll install a fresh test copy on a subdomain of my website in the next week or so and see if I can reproduce the error. If you could just let me know where to send login credentials, I'll get that over to you when I have it ready.

Thanks!

P.S. Anybody who hasn't already (me included) needs to click on that donate link for all the hard work this gentleman puts into this extra.