Having a serious problem adding resources to a project

Hi. I am trying to follow the SDK help from the Nokia S60 SDK. (The one that is just released)

I am having serious problems understanding how everything goes..

I started from the helloworldbasic example, and edited the rss file by adding a dialog.

RESOURCE DIALOG r_aknexgrid_dialog_fillingorder
   {
   title = qtn_aknexgrid_title_dialog_fillingorder;
   buttons = R_AVKON_SOFTKEYS_OK_CANCEL;  
   flags = EEikDialogFlagWait;         
   items =
       {
       DLG_LINE
             {
             type = EEikCtLabel;
             id = EAknExGridDialogFillingOrderLabel1;
             control = LABEL
                   {
                   };
             },
       DLG_LINE
             {
             type = EEikCtNumberEditor;       //EAknCtIntegerEdwin
             prompt = qtn_aknexgrid_text_dialog_fill_vert_horiz;
             id = EAknExGridDialogFillingOrderPrimaryOrientation;
             control = NUMBER_EDITOR    //AVKON_INTEGER_EDWIN   
                   {
                   min = EAknExGridDialogFillingOrderVert;
                   max = EAknExGridDialogFillingOrderHoriz;
                   };
             }
       };
}

This is copied word by word from the SDK help.

I had to add two #defines to the .loc file too...
EAknExGridDialogFillingOrderLabel1
and
qtn_aknexgrid_title_dialog_fillingorder

Now, when the program starts, it just gives a System error message and exits. Even without modifying any C++ code.

What did I do wrong?

Thank you very much

PS: Are there any tutorials for working with resources? The Nokia SDK keeps on explaining the very small details but forgets to talk about how everything works together.