Ok, ignore my post above then. 
I might have had some ideas if this occured in other levels as well but you say it is happening only in this level so… : \ Try deleting the pp volume and creating a new one. It may have been corrupt somehow.
Ok, ignore my post above then. I might have had some ideas if this occured in other levels as well but you say it is happening only in this level so… : \ Try deleting the pp volume and creating a new one. It may have been corrupt somehow.