asnajda on "Insert image in a post : error in WP 3.7.1"

Hello,
I'm trying to insert an image in a post and it won't work.
If I add by uploading, i get the message :"Error IMG_9935.JPG
An error occurred in the upload. Please try again later."
Later, the image shows in my gallery, but no way I can include it in my post (the html seems ok but the image won't show.
I already emptied the cache: no change.
Anyone has been ale to fix this issue ?
Thanks so much...