Hi, Just did ghc-pkg check on my system just out of curiosity. Even here I am getting the rts package errors. But I followed the instructions given at the above url to rectify it. To my surprise there is one more such error. It is related to haddock-2.4.2. Pasting here the 'ghc-pkg check's dump ---------------------------------------------------------------------------------------------------------------------------------------------------- C:\Program Files\Haskell>ghc-pkg check There are problems in package haddock-2.4.2: import-dirs: c:/builds/slave/x86-win-stable/build/ghc-6.10.2\haddock-2.4.2 doesn't exist or isn't a directory library-dirs: c:/builds/slave/x86-win-stable/build/ghc-6.10.2\haddock-2.4.2 doesn't exist or isn't a directory file Distribution\Haddock.hi is missing file Haddock\DocName.hi is missing file Haddock\Types.hi is missing file Haddock\InterfaceFile.hi is missing file Haddock\Exception.hi is missing file Haddock\Utils.hi is missing file Haddock\GHC\Utils.hi is missing cannot find libHShaddock-2.4.2.a on library path The following packages are broken, either because they have a problem listed above, or because they depend on a broken package. haddock-2.4.2 ----------------------------------------------------------------------------------------------------------------------------------------------------- I am using 6.10.2 on windows XP. Any suggestions on how to rectify this? -raja