I have an attachment that a user attached that appears to create an invalid link for it.

http://www.kixtart.org/forums/attach/15-Users.DBF.ini

The file exists at that location so it was uploaded correctly and the system has permissions to access the file so not sure exactly what's wrong.

It appears that files can't be downloaded from there but images can.

http://kixtart.org/forums/attach/8-SizeVBS.PNG

On another note it would appear that UBB is putting a number in front of the uploaded attachment. Why?

Okay just did a test of my own. It seems that the link for anything besides an image won't donwload.

http://www.kixtart.org/forums/ubbthreads.php?ubb=download&Number=16

If you click that link you get
http://www.kixtart.org/forums/attach/16-Users.DBF.ini

But it still won't download the file you get a 404 error.

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