Hey guys, I realize this release is a little old. But I'm hoping to get some help with this anyway if that's cool. This is my employer's box and I don't have the option of upgrading it. I installed apr 1.5.1 and apr-util 1.5.4. Then downloaded the source for apache 2.4.10 for a project that I'm working on. I gave these configure flags along with make and install [root at uszwsls00008la httpd-2.4.10]# ./configure --prefix=/opt/apache2 --with-suexec-bin=/opt/apache2/bin/suexec --enable-so --enable-expires --enable-speling && make && make install And when I tried to start apache I got this weird error: [Wed Nov 05 13:55:14.696079 2014] [core:crit] [pid 17290:tid 47424788414864] AH00102: [Wed Nov 05 13:55:14 2014] file mod_setenvif.c, line 637, assertion "is_header_regex_regex != NULL" failed /opt/apache2/bin/apachectl: line 79: 17290 Aborted $HTTPD -k $ARGV I've been googling my head of to get the solution to this error, with no luck. There just seems to be no good info out there for this problem. I was wondering if anyone has seen this kind of error before and knew how to get around this? Thanks Tim -- GPG me!! gpg --keyserver pool.sks-keyservers.net --recv-keys F186197B