Hi Sigbjorn. I wrote:

I built CVS head GHC with this package and mucked around a little bit. > The only problem I've come across so far is that an objectio library application I have crashes on take-off when built with this compiler (not necessarily to do with objectio of course). It does not crash with GHC 6.2.1

Woops. It turns out that I missed a blatantly obvious error message which 6.2.1 did not give: ================================================================ Starting program: c:\data\source\ghc\grass/./objectio/geo.exe grass/./objectio/geo.exe: main.hs:23:8-70: Irrefutable pattern failed for patter n [fileMenuID, mapMenuID, grassDBMenuID] ================================================================ after I shortened a list of ids. Luckily this afternoon I took delivery of a pair of reading glasses which will hopefully help me to avoid such errors in future. Thumbs up for that installer. Cheers Mike Thomas.