Well, an update.

The files in the Avast folder stayed disappeared, but that one, odd file in Documents did reappear.

It doesn’t seem like the file is problematic, but if anyone has a suggestion about how to either remove it or exclude it (the “//?Volume…” at the beginning of the filename has me stumped), that would be appreciated. I’ll attach it below. Just know that the "(from Home PC) " at the end of its filename just comes from SugarSync adding it.

Thanks.

Robert