The original ‘Blair Witch Project’ cast are furiously demanding more cash from the ongoing horror franchise. Joshua Leonard, 48, one of the three actors who starred in the 1999 found-footage horror phenomenon – which made almost $250 million at the global box office on a budget of around $200,000 to $750,000 – hit out over their lack of residual payments for the movie in an open letter signed by himself and his former ‘BWP’ co-stars Rei Hance (also known as Heather Donahue) and Michael Williams to Facebook on 21 April. The trio used the message to urge movie studio Lionsgate – which now owns t…