OK, I don't know how long Post To Group hasn't worked on my computer because I only use it a couple of times a year. Usually for a request post.
When I click on Post To Group the dialog box opens just like it always did, I enter the subject and the text just like I always did, then I click Post Now and the dialog box closes just like it always did -- but nothing happens and there is no new entry in the log showing any sort of attempt.
I'm running registered NewsBin Pro 6.90B12 build 5396 -- everything else seems to work fine, at least all the features that I use work pretty much as they have for years, but suddenly Post to Group doesn't do anything.
I just tried Reply to Group and that doesn't seem to work either.