I have two identical websites, one used as a dev site the other the live site. They are hosted on the same box with identical settings, yet after upgrading to WordPress 3.5 the live site no longer allows for selecting small, medium or large images to insert into the post? The dev site has no issues, you are provided the options for small medium, large & fullsize. I have reinstalled wordpress now twice on the live site without success? Please tell me I am missing a setting or something??