Thanks for the speedy reply! I already had anti-virus exceptions for the game project folder in place from using previous versions of AGS, so I don't think that's the cause.
In AGS 'enable Game Explorer integration' is set to false.
*edit: Okay, I have no idea how but restarting my PC fixed the issue. Maybe the anti-virus exception didn't kick in until reboot. Sorry to waste your time and thanks again for these amazing updates!