We've had at least one report that uploading files to attach to a post is not working. I've tried it, and it seems okay to me, as you can see from this file I have just posted (using the 'Upload a file' link when writing this topic):
Sorry, finger trouble, obviously need stronger caffeine kick to get me going.
Code now corrected so it should run without the error.
The board we use is similar to those others, and its one we've been using elsewhere for a while now. We had to alter some of the file upload Mod to make it fit with how our server is organised, and this is where the problems arose. Hopefully all sorted now.