After considerable thought, I have elected to permanently close the uploader function and not replace it with a new version.
Providing this service is a costly one resource-wise, and our original uploader is broken beyond repair, so a new system would require implemented. I don't believe it is worthwhile to do so given the abundance of free hosts elsewhere online. Disabling this extra service allows us to focus on the core FR.com service, the wiki.
Not to fret about existing files that are in use - they will remain where they are & active. Hotlinks on the forum for these files in posts, etc, will still function in future.
As for accessing your old files again; please PM me a request, and you will be given a URL with which to download a full archive of all files you uploaded to the website. It will be provided in .tgz format, so if you don't have it already, you'll need to download 7zip