No, my developers just worked at the backend, then the database has restarted by it self, so we didn't mess with the database when it happened.
There is a lot of errors in the log files.
I can sent the log files in a PM if you would like to help.
this is from the log:
[21-Oct-2016 12:46:40 CET] PHP Strict Standards: Declaration of Cart::checkQuantities() should be compatible with CartCore::checkQuantities($return_product = false) in /home/egoshoes/public_html/override/classes/Cart.php on line 196
[21-Oct-2016 10:53:05 UTC] PHP Warning: Invalid argument supplied for foreach() in /home/egoshoes/public_html/classes/shop/Shop.php on line 337