Dear Sir/Madam
I Installed Haskell Platform 2012.2.0.0 for Windows and try to load Stdm.lhs which is downloaded from http://www.dcs.gla.ac.uk/~jtod/discrete-mathematics/Stdm.lhs
I have this error:
stdm.lhs:1160:14: Parse error in pattern: n + 1
Failed, modules loaded: none.

Is there anything I should do to make it right?
Thank you.

--
Iwan Awaludin