Is pagetype of Page A allowed to create under Page B's pagetype?

Go to admin mode -> page types -> settings for Page B's pagetype and see which page types are allowed to create beneath Page B.

Just bumping this, I have the same issue. Page A is allowed under Page B's page type and the page does actually copy, but I still get the error message mentioned above.

Any ideas?

Robert

Can you reproduce with the debugger running? If you're using a custom base page and missing any spot where a null reference might occur it can cause this issue.

I believe that was the solution for Deane's original issue, but it was a problem that only reproduced itself once I copied the client's database down to our environment. 

Hi Seth,

I'm just inheriting the standard EPiServer.TemplatePage, I'm gussing this should just be out of the box functionality so I'm at a loss as to what's causing this error.

Do you think it could be something in the code behind of my template. That would indicate that when you run the copy/paste command EPiServer executes the Page_Load method in the code behind, do you know if that's the case?

Thanks,

Robert

I don't believe any of the template events fire during a copy/paste, as far as I can tell they don't.

Code that binds to page creating/loading/etc events would still occur.  If you want to step through your page copy with the visual studio debugger you could just add a temporary .cs file in with contents similar to below.

using EPiServer;
 
namespace Blend.EPiFiles
{
    public class BindEvents : PlugInAttribute
    {
        public static void Start()
        {
            DataFactory.Instance.LoadedPage += pageEvent;
            DataFactory.Instance.SavedPage += pageEvent;
            DataFactory.Instance.PublishedPage += pageEvent;
            DataFactory.Instance.CreatedPage += pageEvent;
            DataFactory.Instance.LoadingPage += pageEvent;
            DataFactory.Instance.CreatingPage += pageEvent;
        }
 
        private static void pageEvent(object sender, PageEventArgs e)
        {
            throw new NotImplementedException();
        }
    }
}

Put set a breakpoint on whatever event is appropriate and step through from there through page creation.

Another nice option for tracking exceptions that may be occurring is a  Elmah: http://code.google.com/p/elmah/

Thanks Seth, I'll give this a try.

Robert