Cheatin' Uh message appear when click browse?

For Wordpress 3.4 open file: wp-admin/media-upload.php
Goto line 126
wp_die( __( ‘Cheatin’ uh?’ ) );
*ADD two //
// wp_die( __( ‘Cheatin’ uh?’ ) );

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For Wordpress 3.5 open file: wp-admin/media-upload.php
Goto line 35
wp_die( __( ‘Cheatin’ uh?’ ) );
*ADD two //
// wp_die( __( ‘Cheatin’ uh?’ ) );