@Panjandrum
It has cleared up for me - I am sure that @AARPMichaelP will be on it tomorrow - if no word, you can PM him. The problem was they had the flooding set for (3) and they raised the limit to (5), I think. Flooding is when the same post is trying to be posted multiple times - this limit keeps down people (commercial seller or something like that) from blasting their spill all over the Board.
One thing - do you ever go to your Profile and clean out the Drafts -
When this error message was going on with me, every time it gave me that error message, the post ended up in my DRAFTS folder - every time, I was trying to post the reply - and got that error message - it ended up in my DRAFTS. Multiple times.
Might check that - at least clean them out. Leave the newest one and when you have cleaned out the others, click on the remaining one and hopefully it will them post.
It's Always Something . . . . Roseanna Roseannadanna