Its a bug in the Website that keeps cropping up - I believe its down to a lot of recent DDOS attacks from bots and it affects all kinds of things. Sometimes it will affect trying to upload images, reviews (when writing a review I always write it in word first then upload it) just writing simple word comments and responses and also it seems to somehow attach to your browser too because when I have tried to shop on separate source websites it will not let me as it doesn't trust my connection. It can also stop your upvotes on peoples comments too and will not tally to their comment karma. I think it may be a continual thing that needs to be continually flushed out of the system so to speak.

I think it’s a time elapsed thing. If you take took long, these sites seem to reset or something and you can’t finish the task you were doing, and then you lose your work on top of it.
Be careful though because the mods and other guys are going to try to say you’re running into a syntax error because youre not wearing the right sized butt plug or some bullshit. Sick fucks.

I have had this problem with oversized images and sometimes attachments. Anytime I’m writing anything I start off in notepad, docs, or word as to have a backup. After so many times failed and having to re-write a few hundred words it makes you want a backup lol