Hi, I am trying to compile hmp3. I have the version from darcs at http://code.haskell.org/~dons/code/hmp3 I am getting the following errors: Tree.hs:190:14: No instance for (Binary FilePathP) arising from a use of `get' at Tree.hs:190:14-16 Possible fix: add an instance declaration for (Binary FilePathP) In a 'do' expression: nm <- get In the expression: do nm <- get i <- get return (File nm i) In the definition of `get': get = do nm <- get i <- get return (File nm i) Tree.hs:236:31: Couldn't match expected type `L.ByteString' against inferred type `bytestring-0.9.0.1:Data.ByteString.Lazy.Internal.ByteString' In the second argument of `L.writeFile', namely `(compress (encode s))' In the expression: L.writeFile f (compress (encode s)) In the definition of `writeTree': writeTree f s = L.writeFile f (compress (encode s)) Tree.hs:240:46: Couldn't match expected type `bytestring-0.9.0.1:Data.ByteString.Lazy.Internal.ByteString' against inferred type `L.ByteString' In the first argument of `decompress', namely `s' In the first argument of `decode', namely `(decompress s)' In the first argument of `return', namely `(decode (decompress s))' Any help is much appreciated. Thanks, Levi