System.InvalidOperationException was unhandled by user code
  Message=This method supports the LINQ to Entities infrastructure and is not intended to be used directly from your code.
  Source=System.Data.Entity
  StackTrace:
       at System.Data.Objects.ObjectQuery`1.MergeAs(MergeOption mergeOption)
       at lambda_method(Closure )
       at System.Linq.EnumerableQuery`1.GetEnumerator()
       at System.Linq.EnumerableQuery`1.System.Collections.Generic.IEnumerable<T>.GetEnumerator()
       at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
       at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)
       at Skillscore.Web.Controllers.HomeController.Experts(ExpertsVM v) in C:\Users\ekkis\Documents\Visual Studio 2010\Projects\SkillScore\Website\Controllers\HomeController.cs:line 172
       at lambda_method(Closure , ControllerBase , Object[] )
       at System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters)
       at System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters)
       at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters)
       at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass15.<InvokeActionMethodWithFilters>b__12()
       at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation)
  InnerException: