Dear friends, I tracked down the athena installation problems to the point that it's definitively a bug in the perl wrapper for ifeffit. Even re-compiling my gcc suite didn't solve this problem. All suggestions given by Matt and Bruce have not been successful so far. Maybe someone here got athena running on a linux box (I have SuSE 7.2) and experienced the same? Could it be the gcc version I use (2.95.3)? Include paths, etc seem to be okay. The build of the wrapper works, but the make test still aborts with the message I posted... gifeffit & ifeffit work fine. Any new suggestions on this issue? Regards, Norbert -- Dipl. Chem. Norbert Weiher (norbertweiher@yahoo.de) Institute for Chemistry - Takustr. 3 - 14195 Berlin Phone/Fax: +49 30 838 53750 / 54792