Hi, It seems there is a problem with gt-itm. I "make" it in my Red Hat 5.2 with the lib file "libgb-linux.a". When I run "itm r10" (r10 is just the example file of gt-itm". It can only produce one gb file and stop with "Segmentation fault (core dumped)". How can I get over this problem? regards, Sun Kai