Hi @Barb E, I'd be happy to look into this!
It sounds like a member of a shared folder you're part of, has issues accessing the folder, right?
We had a scheduled maintenance a few hours ago, which might have caused a temporary hiccup. Could this be the issue there?
I'd suggest you ask the member to try again using a different browser altogether. In any case, if the issue remains, let me know.
Thank you!