We have a program that uses the GHC API to dynamically compile and run new code. We're using GHC 6.10.1 Under GHCi it works fine under OSX, but when running it on Windows, I get Loading package ghc-prim ... GHCi runtime linker: fatal error: I found a duplicate definition for symbol _hs_gtWord64 whilst processing object file C:\app\ghc-6.10.1\ghc-prim-0.1.0.0\HSghc-prim-0.1.0.0.o This could be caused by: * Loading two different object files which export the same symbol * Specifying the same object file twice on the GHCi command line * An incorrect `package.conf' entry, causing some object to be loaded twice. GHCi cannot safely continue in this situation. Exiting now. Sorry. When compiling the program using GHC --make, it runs fine Is this a know issue? Other people encountered this? Thanks, Peter