Maybe the photo you're trying to upload is too big?

I've had the same issue recently.

Only a 2 meg file and I thought the limit was 5 meg.

I've taken photos of plants before with my ipad and had no problem adding them to my question. A trip to the apple store is indicated, no doubt they'll solve the problem for me.

I had difficulty uploading a photo to a question I was asking yesterday. I ended up loading the question minus the photo. When the question appeared on goy I used Edit and add photo and it worked.