[syslog-ng]syslog-ng cannot run in Solaris 2.7

Hi, Sorry, this may be an already answered question, but I tried to search in the archives and cannot find a solution. I have just installed syslog-ng 1.4.12 in a Solaris 2.7 machine. I started it and it died quietly without any message. Then I tried the "-d" option, and use logger to feed a test message (e.g. logger test test), it immediately cores dump: syslog-ng version 1.4.12 starting io.c: Preparing fd 5 for writing Segmentation fault (core dumped) The conf file is just the syslog-ng.conf.solaris file. Can anybody help? Thanks. Shirley