I get most of the way through the installation, and then the window just kills itself. The only info I could find is that the Log says
File created on 1-18-2009 at 02:17:48
Product : SetPoint version 4.70
02:17:48 = Before khal launched
02:17:48 = Installing khal...
02:17:48 = Install KhalInstaller32.msi
02:17:49 = Return value of LMkRstPt when abort 0