Have you ever been browsing through your Social Site and all of a sudden you have lost all the Content from Profile images to News Feeds even having site errors when trying to access any of your plugins.
Have you seen this error within your Error Log?
exception 'Engine_Api_Exception' with message 'Unknown item type: storage_file' in /home/mysite/domains/mysite.com/public_html/application/libraries/Engine/Api.php:393
If this is the same or very close to the error you had then the fix can be very easy.
If you open your SQL Database and locate Table ” engine4_core_modules ”
Once you have open the table scroll to the bottom of the page and locate table ” Storage ” if you move 4 Columns over and you should see a number 0 in the column change that number to 1 and save.
If you now return to your website and refresh the page everything should now be back to normal.