traceback -> error message

IPython/extensions/rmagic.py

@@ -141,7 +141,7 b' class RMagics(Magics):'
             value = ri.baseenv['eval'](ri.parse(line))
         except (ri.RRuntimeError, ValueError) as exception:
             self.flush() # otherwise next return seems to have copy of error
-            raise RMagicError(unicode_to_str('parsing and evaluating line "%s". R traceback: "%s"\n' %
+            raise RMagicError(unicode_to_str('parsing and evaluating line "%s". R error message: "%s"\n' %
                                              (line, str_to_unicode(exception.message, 'utf-8'))))
         text_output = self.flush()
         ri.set_writeconsole(old_writeconsole)