[plt-scheme] PLT 205 - windows scheme extensions crashing mzscheme

I simplified my example of windows scheme extensions failing.
Running the latest cygwin on W2K or WXP.

  Start cygwin
  export PATH=/cygdrive/c/Program\ Files/plt
  cd /cygdrive/c/Program\ Files/plt/collects/mzscheme/examples
  mzc.exe --cc hello.c
  mzc.exe --ldd hello.dll hello.obj
  MzScheme.exe
    (load-extension "hello.dll")
    CRASH - dialog pops up 
    MzScheme.exe has encountered a problem and needs to
    close.  ...

Or is it a cygwin problem?  Except that extensions work in PLT 204.

Thanks,

Ron
stanonik at cogsci.ucsd.edu