Thank you for the instruction about a log message. I'll follow it. > Is this step still needed, though? For solving the issue I originally had, just utilizing state[] to skip "store" operations is enough. Since the osxkeychain implementation doesn't seem to be aware that it can run in parallel, I thought it would be better to leave this step in case a similar problem occurs. If this reason is weak, I'll remove this step. Koji Nakamaru