[Haskell-beginners] Problem building MusicXML

My problem is that "cabal install" just hangs at the line "Building HaXml-1.22..." and I don't know how to figure out what it's trying to do. Background: My main goal is to use the 'musicxml' package. On Windows XP, I installed Haskell Package 2010.1.0.0. (I needed base 3 for compatibility with musicxml.) I did 'cabal install musicxml'. First I got warning: Warning: c:\Documents and Settings\Mike\Application Data\cabal\config: Unrecognized field world-file on line 15 Then it built text-0.11.1.3, polyparse-1.7, then it started to build HaXml-1.22 and got as far as printing "Building HaXml-1.22..." but hung. No CPU was being consumed. Dennis