I've narrowed down the issues I was having with DNN 7.2 and jquery. My older skins are not loading jQuery Migrate 1.2.1. 

I can add it to the skins, but I've read in a few places that it's supposed to be included with DNN 7. Is this an omission with 7.2, do I need to configure something or should it be added to every skin? I don't see it explicitly add in the Gravity skin for instance. 

Thanks for the response. I'm not sure I follow. I just created a new portal and installed a DNN 7 skin I bought from dnnglobal. Where would I add the  JavaScript.RequestRegistration(CommonJs.jQuery)? 

It seems that 7.2 is not always loading it. The Gravity skin is loading jquery-migrate 1.2.1, but I'm not sure how or where. If I change the page skin to the one I just bought I get the jquery errors.

I am having what appears to be the same problem. I am running v.7.2.2 and all the files appear to be loading, but jquery and other scripts are not working properly. However, I have not installed URLScan, so that can't be the problem (unless I need to install it?). I tried all 3 menu providers and they all have the same problem. When I am logged out, I don't get any javascript errors.

For example, on Admin > Page Management, I get the error: dnn.extend is not a function.
When I am editing a module settings, I get many errors, such as (from dnn.jquery.js): dnnFormHelp.on is not a function, instance.attr(...).replace is not a function, and a(...).on is not a function.

I am panicking because this is on my client's live site. Please help. Thank you.