"Children could not be evaluated" issue after updating Entity Framework to version 6

I was recently working on an ASP.NET MVC 4 website using Entity Framework 5.0.  

I updated my entity framework using "update-package -EntityFramework" command in package manager console.  It updated Entity Framework pretty well, but stuck me with an issue.  I was no longer able to debug my values and it showed "Children could not be evaluted" as shown below.  This was working fine before I updated my entity framework.

The solution is really simple but tricky.  I just had to add .ToList() at the end of the query and it worked like a charm.