Hi Alfredo,
It may be your internet issue so you are getting the fatal error while trying to install the plugin.
I think your plugin is not properly installed so you are getting the admin crash. So once you delete the revolution slider plugin from your ftp
Go to wp-content -> plugins -> revolution-slider (delete it)
We have attached the plugin(revolution slider) on the theme folder.
It is inside wp-content-> themes -> interface-pro-> inc -> plugins -> revslider
Copy this to your laptop / desktop and unzip it first and then after unzip this file you paste this inside
wp-content -> plugins folder
From the admin dashboard you activate it and it works
Thank you!
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