Thanks Kevin... I relayed your response to my user so she went to upload
her docs again, and voila... no issues. I guess she happened to try to
upload her docs at the exact moment one of those "every so often"
glitches was occurring... what luck, eh. Anyhow, we're good and she will
refresh/close/reopen WF window if she ever comes across that error
again, but I'll still keep my fingers crossed that it won't.