I'm running UBBThreads 7.1.1. Recently links to attachments return "File not Found". Even on an attachment I uploaded for someone this morning?

I've check the extensions and the file size limit, both seem fine. This has got to be something really obvious I'm missing - but I just can't see it.

Did someone edit the path/url to the file attachment directory?

Also check the folder permissions to make sure they are correct as well as the index.html file in each folder.

Folder CHMOD to 777
Index file CHMOD to 666