Hello Karl,
You are absolutely right. I omitted one line of code from my script. I
think I didn't see this before because I was (wrongly) assuming that the
XyWin folder would be in the root directory, not in a subfolder, as in
C:\OTVDM\XYWIN. The current download should (I hope) correctly create
the autoexec.bat file:
www.columbia.edu/~em36/XyWinInstall.exe
Thank you for persisting with this!