Bug 142104 Cannot place data set field on master page
Bugzilla 122419 says this is fixed. I am using RC2, and I can't insert a data set field in the master page header or footer.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/dnd/InsertInLayoutUtil.java
ExceptionHandler.handle( e );
						return null;
					}
				}
				for ( int i = 0; i < positions.length; i++ )
				{
					positions[i] = tableAdapter.getCell( currentRow,
							currentColumn++ );
				}
				focusIndex = 0;
			}
			else
			{
				for ( int i = 0; i < positions.length; i++ )
				{
					positions[i] = target;
				}
				focusIndex = items.length - 1;
			}
			return positions;
		}
		protected TableHandle getTableHandle( CellHandle firstCell )
		{
			DesignElementHandle tableContainer = firstCell.getContainer( )
					.getContainer( );
			if ( tableContainer instanceof TableHandle )
			{
				return (TableHandle) tableContainer;
			}
			return (TableHandle) tableContainer.getContainer( );