I’m occasionally experiencing this as well, and also started noticing the problem starting May 1st. After finding this thread, I checked my client’s debug logs and can confirm that when I’m having a problem starting a chat bot, it looks the same as what’s happened in Nifty255’s logs: sometimes I just don’t get the 001 reply, or it arrives very late, which causes the bot to not start correctly. For example, starting up a bot just now, it took 1 minute and 23 seconds to receive the 001 reply.