[plt-scheme] slatex cygwin woes

When I try to use slatex in Windows XP, it pops up an error message box 
with the following error:

     16 bit MS-DOS Subsystem
     C:\WINDOWS\system32\ntvdm.exe
     Error while setting up environment for the application. Choose 
'Close' to terminate the application.
     [Close] [Ignore]

I haven't the foggiest idea how to go about debugging this problem. 
Slatex has always given me problems under Windows, but I believe that 
Cygwin now at least comes with a latex binary that it can find without 
trouble (I used to have to write a fake latex.exe wrapper in C first). 
But I've never seen this problem before.

Thanks,
Dave