Hey there,
I am sorry for the delay of this reply,
I've tried to re-install Easysocial in your site again, it seems hitting this error :
504 Gateway Time-out (you can refer on my attached screenshot below)
The problem is actually because the "file copying" takes time and because your server is extremely slow in copying the files, it actually failed. The best way to fix this is to ask your hosting provider to look at the speed of file copying on the server. At the rate at the file is being copied, it's going to take a while.
Reference link :
->
http://forum.joomla.org/viewtopic.php?f=622&t=810963
->
http://www.nginxtips.com/504-gateway-time-out-using-nginx
By the way, just I using this network installation method :
http://stackideas.com/docs/easysocial/administrators/setup/network-installation
Actually this PHP passthrou is very important if you want to upload video into Easysocial, it rely on this php function when upload video processing.
Keep us updated then when you get response from your hosting.