Can't post pictures now

I have posted many cl***ifieds in the past with pictures but now I am getting this message when trying to pull a picture from my phones images in my phones camera gallery. Do you have any idea what is happening here ? This screen shot just now worked from there. ?

 

Thanks for your suggestions Corncobcoupe. It prompted me to try posting other photos from my file and all posted fine clear to the earliest one I have so it is not a problem of full memory. It just seems to be a problem with the one photo I couldn't get to post.

 

Your photo file may be too large. Not pixel wise, but Kilobyte size. Try resizing it and then upload it.