ImageColor / up.php error

There are a number of things that can cause this. Please try the following:

1) set the permissions of your WP-content/uploads folder to 777 (you can do this in your FTP program or cpanel)

2) contact your host and ask them to check you are running the latest version of php, check you have the latest GD library activated and installed on your host and ask them to add curl wrapper function support.