Sitecore menu items not working - javascript errors

Question

So I'm just starting to work in sitecore and for some reason none of menu options are working in Page Editor mode for the site that I'm working on. We pretty much have the sitecore website and add some extra page content (MVC app files) to it. I'm getting a variety of javascript errors.

In content Editor, if I click the Sitecore logo and click on Properties I get

TypeError: contentIframe.dialog is not a function

In page editor if I click on the blue components button I get:

TypeError: i.widget is not a function

I'm guessing maybe it's a conflict between jquery that we're using for this website and whatever Sitecore is using. I think it's 7 - but I can't see it via the menu option :)

That guess could be wrong - it could in fact be a browser issue, but I've ensured Firefox is not blocking popups. It doesn't work in Firefox, IE or Chrome though.

The weird thing is that no one else on the project is having this issue it's only on my computer.

Edit - I've also just tried re-installing (7.2) without any local code changes I still can't click on a page and go to Presentation, Details (Layout) - I get a TypeError: contentIframe.dialog is not a function

Edit 2 - I've noticed that I can use sitecore in the QA environment and the dialogs work fine there. So it's something specific to my local build of the site we have (sitting on top of sitecore). But the dialogs just throw jquery errors when I do stuff locally. I was hoping it would be a browser setting but doesn't look like it.

Edit 3 - What I've tried this morning.

• Same thing happens in all browsers (FF, IE, Chrome) and I’ve cleared my browser cache I can access the QA site and the dialog appears as expected
• Copied across the QA site files, pointed my local Digital site in IIS to the new folder – dialogs don’t work
• Team member tried accessing the site from his machine (pointing to my IP address) and dialogs work for him
• I tried seeing if another local sitecore site dialogs were working – but the menu items for that are opening as new windows (so I’m guessing it’s a sitecore 7.2 feature that they appear as jquery dialogs??)

Answer 1

So after googling for rejected-by-urlscan it turns out there's a program called UrlScan from microsoft that was blocking my dialogs. Uninstalled that and I now have dialogs appearing for sitecore. Very exciting :)

Answer 2

I guess it is a problem with some browsers plugin. Sitecore is sensitive to scripts that are used(different versions of jquery or prototype.js). Plugins can inject scripts to HTML source of pages and it can cause errors.

Try to switch off all plugins at least at one browser and check the results.