Login Image - Image won't load.

I tried to upload an image that was too large and I received this warning and the image did not load...

Warning: getimagesize(http://kingdom-connections.org/wp-admin/images/wordpress-logo.svg) [function.getimagesize]: failed to open stream: HTTP request failed! HTTP/1.1 406 Not Acceptable in /home/kingdoma/public_html/wp-content/plugins/login-image/login-image.php on line 270

I reduced the file and tried again, but I am still getting the same error. I tried deactivating the plugin and reactivating and that did not work.