We're having an issue with 2 or 3 macros while accessing the model object. After upgrading to 7.0.0, this issue affected all of our macros that attempted to use the Model object. Now, at 7.0.1, most of our macros work but there are still a couple that don't. When attempting to access the model object on a broken macro, we get the following exception

An exception of type 'Microsoft.CSharp.RuntimeBinder.RuntimeBinderException' occurred in App_Web_productpagerenderblockcontent.cshtml.70df5e80.kcpv0jez.dll but was not handled in user code

I've tried cleaning all razor macros in the /Temp/Razor but that didn't seem to do anything.

The line in question is this:

@DrawColumn(Model.BlockContentContainerLeft.First().Children)

DrawColumn is just a helper function defined at the top of the cshtml file as such

@helper DrawColumn(dynamic dContentCollection)
{
  int iLeftPaddingSize = 0;
  int ileftMarginTopPadding = 0;
  int iCount = 0;

  foreach (var item in dContentCollection)
  {
     


      @try
      { 
         if(item.renderLeftMargin == true)
         {
           iLeftPaddingSize = item.leftMarginSize;
           ileftMarginTopPadding = item.leftMarginTopPadding;

           

              @item.leftMarginContent
           
         }
         


         @if(!String.IsNullOrEmpty(@item.blockHeader))
         {
              
@item.blockHeader
         }
         @RenderContent(item, iCount)
         
       }
       catch(Exception ex)
       {
          
@ex.Message
          
       }

     
      iCount++;
  }
}

It seems to me that this problem is only affecting macros with helper functions but I havent been able to confirm that yet.