The latest versions of Google Chrome can prevent some web services (such as YouTube, Screencast and other embed codes) from being displayed on your screen.
You may get an error message similar to this one displayed ...
Google Chrome shows this error because there is a slight chance the embed code could include XSS scripting that might include malware.
The way to get around this error message is to disable XSS checking in Google Chrome by adding a bit of code to the Chrome program address : -disable-xss-auditor
The full target line will be: "C:\Program Files (x86)\Google\Chrome\Application\chrome.exe" -disable-xss-auditor