Problem to compile -parallel

[XSet]

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