wrong ELF class: ELFCLASS32" error.

"httpd: Syntax error on line 243 of /apps/apache2/conf/httpd.conf: Cannot load /apps/siteminder/webagent/bin/libmod_sm22.so into server: /apps/siteminder/webagent/bin/libmod_sm22.so: wrong ELF class: ELFCLASS32" error.

Scenario: 

When the binaries are installed and trying to start the web server (Apache in this case).

Cause: 

Due to incorrect version of binary installed

Usually happens when we install a 32 bit web agent on a 64 bit Web server or vice- versa 

Solution: 

Install correct version of binaries.