I can tweet, but the message never appears - no error messages? How do I trace this?


Since early June I can send a tweet from my app to the time line, and it’s reported as sent successfully - however, it never arrives? There are no error messages, the response is “Successfully sent” - but the message never shows up on the timeline.
Prior ro June - it all worked fine for ages and ages. Yes, I know in June v1.1 was fully implemented, but what I can’t figure out is, why no error messages if something is failing?
Does anyone have any idea where I might start looking?