I think this is not a bug in his program (which ran fine on my old XP VM inside VMware on a 32-bit Debian system from 2005 without errors years ago), but a problem with the old VisualBasic runtime on newer Windows versions (which unfortunately completely refuses to run on both my old XP VM and my more recent Windows 7 VM inside VirtualBox on Ubuntu 12.04 64-bit now).
Has anybody encountered similar problems with running LevelSketch either in a Windows VM or under a native Windows installation? Or does it run fine for you?