If you you want to register or report a bug, write to:
Michael Praschl
Hohe Warte 7-1-5
1190 Wien
AUSTRIA (no kangaroos, MOUNTAINS!)

or (what I like better) to:
Email: e9525802@student.tuwien.ac.at

The homepage of ProRen can be found at http://stud3.tuwien.ac.at/~e9525802/proren/