Receiving Error loading image to teaser box

We are receiving this error when we load an image in the left teaser box. Here is the error.

WP_Error Object ( [errors:WP_Error:private] => Array ( [image_no_editor] => Array ( [0] => No editor could be selected. ) ) [error_data:WP_Error:private] => Array ( ) )

Here is a link to the web page.

http://nebraska150.org/nebraska-150th-sesquicentennial-2/