I believe this is the case of OOHaskell gotten a bit out of sync with HList and GHC. Please use the latest code bases
http://code.haskell.org/HList http://code.haskell.org/OOHaskell OCamlTutorial and all other OOHaskell code should work (with GHC 7.0.4). _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe