I noticed yesterday that some of my uploaded Sims aren't actually there - the description and pictures are on the Swap Shop but not the attached files. It's possible that I forgot to upload them but I think I did and they've disappeared. When I tried editing the posts to add the files, I got the message: The attachments upload directory is not writable. Your attachment or avatar cannot be saved. I've tried several times now with the same result.
Is this just a temporary effect of the server being overloaded with all the Sims 4 launch excitement?