blank image when CB pops [#2642820]

I have a colorbox gallery , but when it opens the first image in the gallery is blank, the next image is good lookin then the next image may be blank again. It's ruining my CB!

ers me code:

hello world

Link to click

        
                                                        foreach ($field_hires_photo as $key=>$val) {
         
                                                                        echo "<a href=\"";
                                                                        print_r($val[value]);
                                                                        echo "\" id=\"colorbox-con\" class=\"colorbox\"rel=\"gallery-all\" <img   src=\"";
                                                                        print_r($val[value]);
                                                                        echo "\"height=\"500px\"></a>";
                                                                    
                                                                           
        
                                                                }

thanks