[Bug-AUCTeX] preview-latex with cygwin, xemacs and tetex 3 does not work

[Yadin Goldschmidt]

For a long time I used preview-latex 0.91 on windows xp pro+cygwin with 
xemacs 21.4.17 and tetex 2.02 and everything was fine.
Upgrading to tetex 3.03 and recompiling preview-latex it installs fine, but 
when previewing a document I get the error message
"no preview images" which means something went wrong. The log files do not 
show anything wrong, but I can see that the temporary
directory with the images was not created. Any clues? Did anyone succeed to 
have preview-latex work with that configuration?
Downgrading tetex to version 2.02 and recompiling preview-latex make it work 
again as before. I used the same latex document in all tests.