Many thanks to you @kevinslane. Fixing the post_id to post_ID in my themes works great, without having to touch core.
For anyone using Elegant themes…go to themename>epanel>js>custom_uploader
and change all occurences of post_id to post_ID. Worked great for me. I recommend you edit through 7-zip or similar, when i rezipped the theme and uploaded, i began getting a missing css file error.
