Thank you artdesigner. This code snippet worked for me!
For those still having problems, add the functions.php code right at the bottom of your functions.php.
add_filter( 'wp_image_editors', 'change_graphic_lib' );
function change_graphic_lib($array) {
return array( 'WP_Image_Editor_GD', 'WP_Image_Editor_Imagick' );
}