You need to be running Apache 1.3.12, which I thought I'd also made linked from that page.
Technical description: The Apache RPM included with e-smith 4.0 was not built with the Extended API (EAPI), which is required for compatibility with mod_ssl. The apache-1.3.12-2 rpm available for download (which is the same one as included with RedHat 6.2) is built with the EAPI. Any other RPM which was built with the EAPI (for example, the apache-1.3.9 from Linux-Mandrake) will also work, but 1.3.12 was easier to specify. This, incidentally, is why I didn't build the PHP RPMs to require apache 1.3.12, because it's not really version-dependent.