Thanks Patrick. First I tried cabal install cabal cabal-install => errors. But downloading and installing the cabal.exe worked. Everything seems okay now. Thanks. Kees =========== Van: Beginners [mailto:beginners-bounces@haskell.org] Namens Patrick Wheeler Verzonden: maandag 5 mei 2014 14:21 Aan: The Haskell-Beginners Mailing List - Discussion of primarily beginner-level topics related to Haskell Onderwerp: Re: [Haskell-beginners] cabal problems You could try to download cabal binary from: http://www.haskell.org/cabal/download.html This might be a this issue, the error reported looks similar: https://github.com/haskell/cabal/issues/1561 If it is the same then using a newer version of cabal should fix the problem. Patrick --- snip ---