'System.InvalidOperationException' occurred in Microsoft.Phone.ni.dll

Question

I am making an app which records sounds.
When clicking the mike button it is supposed to move to a new page.
When I add a save button in the application bar of the new page and then run it, it throws this exception

'System.InvalidOperationException' occurred in Microsoft.Phone.ni.dll

If I don't add the save button it works fine

Answer 1

Google for Update 4 for visual studio 2012.Its size is about 2gb download and install the update and you're done

http://www.microsoft.com/en-in/download/details.aspx?id=39305