message: Clarify batch mode cmd-line arguments error message
diff: @@ -208,7 +208,10 @@ bool BatchContext::parseCommandLine()
  argExt = arg.substr(extStart, arg.length());
  if (argExt == ".sg") {
  std::cout
  - << "loading a .sg file, batch-mode cmd-line arguments not allowed. Please remove the arguments and try again.\n";
  + << "!!! When loading a scene file (.sg), fewer command-line arguments are permitted.\n"
  + << "!!! If the application exits unexpectedly, please check below for errors,\n"
  + << "!!! remove any 'not expected' arguments and try again."
  + << std::endl;
  sgScene = true;
  }
  }
  