When trying to upload, I get: -- The file you uploaded seems to be empty. This might be due to a typo in the file name. Please check whether you really want to upload this file. --

Having been through this several times before, I have notes on the common things to check for. Unfortunately, after having gone through those solutions I am still unable to resolve this problem.

First, is there any other documentation on the subject, other than http://meta.wikimedia.org/wiki/Uploading_files ?

* php.ini has file uploading enabled. * php.ini has a 2M upload size, which is larger than the file size. * I tried editing php.ini to specify a temp folder, which I made sure was world-writable. * images/ is writable. * I'm not running php safe_mode * my browser has permission to upload the file. * I'm not running Apache2, and don't have funky settings. * I've tried taking down various firewalls, to no avail.

The thing that's changed is.. the underlying distribution. So I suspect there's an issue there, but I don't have the knowhow to know where to poke around.

Ideas?

Running mw 1.5rc4