I just built Apache 1.3.19 on a RedHat 6.2 machine with mod_so enabled. There had previously been RedHat secureweb installed (apache-ssl 1.3.12), but that had been removed before I started this process. Immediately after being built, the Apache server started fine. I then built mod_info using apxs to check out the dynamic loading, which worked fine. I did nothing else before moving on to mod_perl. I unpacked mod_perl-1.25 and built it as follows: perl Makefile.PL USE_APXS=1 WITH_APXS=/(the-path-to-my-apxs)/apxs make make test (which doesn't do anything with apxs) make install Everything appeared to go smoothly; no warnings or errors. However when I try to start the server I get this response: Cannot load /home/apache/libexec/libperl.so into server: /home/apache/libexec/libperl.so: undefined symbol: ap_ctx_get /home/apache/bin/apachectl start: httpd could not be started Does anyone have any suggestions or ideas? What did I miss? This is my first attempt at using dynamic modules so its entirely possible I missed something basic. Thanks for any help. Steve