On http://surau-an-nur.my/test/, this looks like it could be a new bug related to some interference from jetpack. Could you try replacing your copy of wp-content/plugins/tubepress_pro_4_1_4/web/js/wordpress-ajax.js with the following:
!function(n,r){"use strict";var t,e="url",a="tubepress",i="action",u="data",o=u+"Type",s=function(r,s){var c,f,p,l,d=s[u],j=d&&d.hasOwnProperty(a+"_"+i);j&&(c=r[e],p=c===t,f="html"===r[o],l=0===c.indexOf(t+" "),(p||f&&l)&&(d[i]=a,r[u]=n.param(d)))},c=function(){n.ajaxPrefilter(s),t=r.Environment.getAjaxEndpointUrl()};n(c)}(jQuery,TubePress);
That should fix the issue there. On http://toptravelbooker.com/videos/, it looks like we're still getting some HTTP 404 errors, for instance
http://toptravelbook...js/tubepress.js
still isn't working. I would ask your hosting provider to see why it's not returning an HTTP 200. Lastly, for http://hov-pod.net/hov-pod-videos/, are you able to upgrade to PHP 5.3 or higher? I was able to reproduce this issue, but only when dropping back to PHP 5.2. That version of PHP has reached end-of-life.
Thanks