I've recently updated from an older 1.x version of jQuery to the latest 2.2.1 and mostly it seems to be running just fine. Unfortunately I'm constantly receiving 2 error messages in raygun which I don't know how to handle:
The first one is Cannot find function createHTMLDocument in object and only happens in Firefox 24.0 under Win 7 (according to raygun).
The second one states Cannot convert a Symbol value to a string and only happens in Firefox 38.0 in the OS reported as Linux Core.
Both errors don't provide any stack trace (at function () line null, column null (null:null)) and I can't reproduce neither one myself using the same FF & OS version using browserstack.
I'm not quite sure if those errors where already happening earlier in the older jQuery version since I was loading this version from a different CDN which didn't provide any useful errors from within jQuery at raygun at all due to same origin stuff.
One more thing: If it turns out, that those errors actually happen in some legacy browsers which just report an incorrect version 24 & 38, I'd also be happy to know, how to detect those browsers early so that I can show them an appropriate message before the errors occur.
I'd really appreciate any help/input on how to tackle this issue since I'm a little clueless by now.
Thanks
