aclocal broken

[RYAN vAN GINNEKEN]

Trying to install zoneminder port but getting this error 
Using this version on Freebsd

FreeBSD pcbsd 7.1-PRERELEASE FreeBSD 7.1-PRERELEASE #42: Thu Sep 11 09:07:25 EDT 2008     root at pcbsd:/usr/obj/usr/src/sys/PCBSD  i386

cd . && /bin/sh /usr/ports/multimedia/zoneminder/work/ZoneMinder-1.23.3/missing --run autoheader                                                            
aclocal.m4:14: error: this file was generated for autoconf 2.61.              
You have another version of autoconf.  If you want to use that,               
you should regenerate the build system entirely.                              
aclocal.m4:14: the top level                                                  
autom4te-2.62: /usr/local/bin/gm4 failed with exit status: 63                 
autoheader-2.62: '/usr/local/bin/autom4te-2.62' failed with exit status: 63   
*** Error code 1                                                              

Stop in /usr/ports/multimedia/zoneminder/work/ZoneMinder-1.23.3.
*** Error code 1                                                

Stop in /usr/ports/multimedia/zoneminder.

PLEASE HELP

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