HELP! PF18 suddenly wont open

Hello,
After a restart of my computer today my game will not open. When I click to launch the game I receive the following message:
"The program encountered an error and must close.
You can go to (website address) or contact support@wolverstudios.com for additional support"
I tried to install/repair with no success so I backed up my league files and unistalled and did a fresh install and still receive the same message.
PF16 and CF17 still function, but I can not get PF18 to play.
After a restart of my computer today my game will not open. When I click to launch the game I receive the following message:
"The program encountered an error and must close.
You can go to (website address) or contact support@wolverstudios.com for additional support"
I tried to install/repair with no success so I backed up my league files and unistalled and did a fresh install and still receive the same message.
PF16 and CF17 still function, but I can not get PF18 to play.