Open the specidied URL doesn't work with Chrome45 and Firefox40

Hi all,

Our tests cannot open the specified URL after we upgrade chrome43 to chrome45, firefox36 to firefox40.

The following code is as a test:

//Launches the specified browser and opens the specified URL in it.
Browsers.Item(btIexplorer).Run("http://smartbear.com/");

//Get a web page test object
var Page = Sys.Browser().Page("http://smartbear.com/");

//Navigate to an URL

Page.ToUrl("http://blog.smartbear.com/");

Does anyone have idea about it? Is there a way to modify the code or shall we downgrade the browser version? Downgrade is not so preferred.

Regards,