Sean Kim writes: Hi Lars, thanks for letting me know:) but I'm not sure how to rebuild it though. Do I all need to do is to change el6 to el5? (I tried to email you privately but our SF id is unknown on the SF mail server?) It is slightly more involved since there was an rpm format update from 5 to 6. You can't just install the srpm. Grap the srpm and copy it to the standard build location under RHEL5, which is /usr/src/redhat/SOURCES. Unpack it using rpm2cpio bla.rpm |cpio -dim. Copy the spec file...
This version comes with RHEL/CentOS 6.9. You should be able to retrieve the srpm from the CentOS vault and rebuild.