Tried to use the printf TH example described in the GHC docs http://www.haskell.org/ghc/docs/latest/html/users_guide/template-haskell.htm... Got this error: Chasing modules from: PrintMain.hs Compiling Printf ( ./Printf.hs, ./Printf.o ) ./Printf.hs:23: Type constructor or class not in scope: `Expr' ./Printf.hs:26: Variable not in scope: `string' ./Printf.hs:30: Type constructor or class not in scope: `Expr' Any clues? -Alex- ______________________________________________________________ S. Alexander Jacobson tel:917-770-6565 http://alexjacobson.com