Hello, i was so happy about 1.2 release, that I downloaded the new 1.2 version of ginac, compiled and installed on my debian unstable machine, using usual configure, make, su, make install. I also have another ginac version 1.1.6-1 installed. When I build a simple proggy using ginac, I use new (1.2) ginac lib and the old cln: g++ -o charpoly charpoly.cpp /usr/local/lib/libginac.a -lcln The resulting program crashes with the segmentation fault. Even if it does nothing. Including <ginac/ginac.h> and compiling the empty program is enough to produce the segfault. The current installation contains the cln version 1.1.6-1. Any hints? I thought, it is because of version incompatibility between the cln library and the new ginac. Then i tried to download the newest cln, which, according to its site should be 1.1.7. But the download site ftp://ftpthep.physik.uni-mainz.de/pub/gnu/ does not contain this version... Or is it because of different compiler versions used to compile cln and my own ginac 1.2? Any ideas? Andrius Kurtinaitis