BuddyPress.org

Oh, I didn’t know there were times to post. Sorry. I did post the first time several days ago during the week (not as a forum post but as a group post, which I didn’t know and was confusing — and which is why I reposted, simply because I thought I posted in the wrong area). Then, the lack of answer led me to believe no one knew the answer (as you said), which is why, being an urgent situation, I was fully prepared to hire someone and added the 2nd comment.

And yes, this seems to be the case. The usernames that are problematic are those with spaces, which is why — as a temp fix — I added a note to the registration form telling people to NOT use spaces.

I’ll add the fix and report back.