If you are upgrading and/or perhaps installing Examplify for the first time and using AVG anti-virus, you may get this warning message from Examplify stating, "invalid system configuration."
AVG will also show that a driver has been blocked. If so, then click on the Settings
Make sure to uncheck the box next to Enable Self-Defense and Enable Hardware-assisted virtualization

Restart your computer for settings to take effect.
Relaunch Examplify.