L.S., Good news for people who want to develop wxHaskell programs by experimenting in GHCi: wxHaskell programs can now be run multiple times in GHCi (GHC 7.10.2, 32 bit). Running a wxHaskell program in the 64 bit version of the interpreter results in the message: addDLL: could not load DLL This is caused by a GHC bug and is reported in GHC bug ticket 3242 [0], it should be solved in GHC 8.0.1 (The 32 bit GHCi crashes when exited, after running a wxHaskell program, but this is not a problem for application developers.) Regards, Henk-Jan van Tuyl [0] https://ghc.haskell.org/trac/ghc/ticket/3242 -- Folding@home What if you could share your unused computer power to help find a cure? In just 5 minutes you can join the world's biggest networked computer and get us closer sooner. Watch the video. http://folding.stanford.edu/ http://Van.Tuyl.eu/ http://members.chello.nl/hjgtuyl/tourdemonad.html Haskell programming --