I have tried resizing, uploading from other places, all sorts, to no avail. I have tried starting new threads in the picture site. Nothing works. 
What’s a household item that reminds you of your grandma’s house?
What words annoy you when used wrong or people don't know the meaning of?
Farage has resigned as an MP for Clacton?
My cousin is acting out and having rage fits, what can I do to help her?!
Are you trying to upload a picture onto your profile, or onto a thread?

I give up. A few weeks ago I learned my lesson that if you write something that goes with the photo, you do actually lose everything you've written when the photo won't post, so be aware of that and copy and paste your written stuff somewhere before you try previewing. 