Yes there are numerous threads on this, I've gone through every one of them over the past couple of days but nothing works.
I originally set my site up, got it looking exactly as I wanted it, was happily uploading images then suddenly I got struck with an http error.
Looked around tried a few things;
- double and triple check permissions
- deactivated plugins, deactivated my theme
- wiped the lot and started again from a clean install
- Then I thought I had it nailed and jetpack and my theme weren't behaving together.
- Another fresh install
- nothing on it, clean out the box http error
- scoured the forums tried every .htaccess modification going,
So it wasn't my theme, it wasn't a plugin and it isn't the server because the other 2 wp sites on there work fine. (both running the same version of WP the only difference is they were upgraded to 4.1 rather than being clean from it.)
- found a timer modification, no effect
- wiped clean and started again loaded jetpack and my theme before doing anything else this time.
- first image uploaded fine, second ok
- third image, nope
- 4th and 5th worked but the last one didn't.
- I even tried changing the library order even though I wasn't using the offending plugin for this fix.
I know I can ftp the images in (looks like I might have to) but the blog on my last site was manual (full on working direct in the database), I wanted a CMS that did it all. (which I thought this did.)
So if it isn't the plugins theme or the server what's the problem?