hello, the error message disappears after issuing these two commands: mkdir /usr/lib/tkgate-1.8.7/libexec ln -s /usr/bin/tkgate /usr/lib/tkgate-1.8.7/libexec the problem seems to be at src/tkgate/verilog.c line 557: sprintf(cmd,"%s/libexec/tkgate",tkgate_homedir); while tkgate binary resides under /usr/bin. bye.