>>>>>Press F12 and depending of the browser debug the script.
>>>>>First see if you have any error messages in console.
>>>>
>>>>Thanks, that was going to be my next question: how to debug this :)
>>>>
>>>>This error is showing:
>>>>
>>>>

jQuery.Deferred exception: a.indexOf is not a function TypeError: a.indexOf is not a function
>>>>    at r.fn.load (http://localhost:51730/jquery-3.1.0.min.js:4:18717)
>>>>    at HTMLDocument.<anonymous> (http://localhost:51730/AboutUs.aspx:13:23)
>>>>    at j (http://localhost:51730/jquery-3.1.0.min.js:2:29568)
>>>>    at k (http://localhost:51730/jquery-3.1.0.min.js:2:29882) undefined

>>>>
>>>>Of course, that isn't very helpful to me :(
>>>>
>>>>Google here I come
>>>
>>>Can you send me this project?
>>>Of course if this is something you play with :-)
>>
>>This is actually a client's system which uses DevExpress controls so it will be difficult to send to you. I could let you access my PC using Team Viewer though :)
>
>.load() has been deprecated. Check :
> http://stackoverflow.com/questions/37738732/jquery-3-0-url-indexof-error

Thanks Viv, that lets me work with version 3.1.0