It seems GHC 6.8.2 fixes a couple of bugs in GHC 6.8.1, so I'm using that one. Gtk2HS does not yet detect my GHC 6.8.2 installation, but I guess it is 100% compatible. Is it possible to get the Gtk2HS installer detect GHC 6.8.2? I’m on Windows. Thanks again, Peter