Jamie, it is  a global issue. Our developers are already working on developing another fix for this one as well. I will keep you posted.

Guys, fix for youtube videos added via VIDEO plugin can be found here: http://www.oxwall.org/forum/topic/12080

I did what you said Aliia and it does not work

Awwad, what software version you use?

version 1.6.0

please share your URL

Awwad contact your hosting provider and request to disable mod_security module on your server

still not working even after replacing the php file 

Mohamad, is this the website: http://www.yalameet.com/ ? 

If yes, first of all this is Skadate Lite software, you need to send all your request and inquiries to Skadate support team. As this is Oxwall forum and we do no provide assistance to Skadate clients. Second you have mod_security module enabled on your server. Contact support team of your hosting provider to disable it or configure it's settings properly.