Strange thing happens. JoomSEF seems to be working fine after upgrade from PHP5.6 to version PHP 7.0.7
However in the Admin side the main menu Control Panel will throw an '(500) Internal Server Error". All other back-end menu's seems to work fine.

Tinkering with .htaccess has so far provided no results. Also keep in mind, this menu was working a few hours ago, when still on php5.6. Nothing changed to the .htaccess file when the system was upgraded to php7. Also I don't have the "Options +FollowSymLinks" enabled. Its not even in the .htaccess file.

Also did a Reinstall from the ARTIO server using the Upgrade menu and the Reinstall function. It was already at 4.6.7. however tried it just to make sure. Even tried an upload package file (latest version 4.6.7) through the Upgrade menu of JoomSEF. No results.

Currently lost at why only this menu (Control Panel) is no longer working on the admin side.

Rgds,

Arno