catch situation where user doesn't overrwrite the original reporting object,...

catch situation where user doesn't overrwrite the original reporting object, causing a section to have zero elements

src/@section/write.m

@@ -33,6 +33,11 @@ function o = write(o, fid, pg, sec)
 
 assert(fid ~= -1);
 fprintf(fid, '%% Section Object\n');
+if isempty(o.elements)
+    warning(['reporting:section.write(): trying to print a section ' ...
+        'with no elements. Perhaps you forgot to overwrite the report object.']);
+    return
+end
 
 if ~isempty(o.height)
     fprintf(fid, '\\setlength\\sectionheight{%s}%%\n', o.height);