when it gives the error "lastchaos already running" while its not just look in your task manager (right mouse button on taskbar then task manager) and look into processes for anything that updates like java updater or google updater, just stop them.
Hm doesnt work for me =(
I started the updated game and 2 msg popped up, one saing
"Last Chaos is allready running on your system"
and the second one
"Allready executive game"