Hi! I try to see how parallel Haskell works with GHC-5.04 under Windows98. I have installed PVM, and compile simple fibonachi example. But when I compile using command line ghc -parallel -id:\ghc\imports\lang -id:\ghc\imports\concurrent -id:\ghc\imports\base -fno-hi-version-check -o main main.hs I get messages: mismatched interface file versions: expected 5040mp, found 5040 Please. Tell me what I should do with interface files? Download other versions ? Thank you Real XSet