Hlds + Ns Crashes On Freebsd

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<div class="IPBDescription">troubles with ns on linux serverbox</div> could anyone hjelp me? if i start on my root serverbox a dedicated server it crashes.
comamnd:
./hlds_run -game ns -port 21016 +ip x.X.x.x +maxplayers 20 +map co_core

it starts but few seconds later:
Core dumped (0)
server shutting down
add -debug to comamnd line blabla

on my other rootbox it works great
its an Slackware Linux, but this one is a FreeBSD 5.4 Release, all other hl mods working good (ex. DoD cstrike )
could it be the problem? And how to fix it without changing OS
thx <!--emo&:D--><img src='http://www.unknownworlds.com/forums/html/emoticons/biggrin-fix.gif' border='0' style='vertical-align:middle' alt='biggrin-fix.gif' /><!--endemo-->

BlueNovember

The Server Discussion forum is the best place to look for these ... server-related things. <!--emo&:)--><img src='http://www.unknownworlds.com/forums/html/emoticons/smile-fix.gif' border='0' style='vertical-align:middle' alt='smile-fix.gif' /><!--endemo-->
<a href='http://www.unknownworlds.com/forums/index.php?showforum=8' target='_blank'>http://www.unknownworlds.com/forums/index.php?showforum=8</a>

This guide may be of use:
<a href='http://www.vadakill.com/nsguides' target='_blank'>http://www.vadakill.com/nsguides</a>

Are you running it as root?
Are you running AMX(X) or Metamod? If so disable them for the time being.

AHA!
BlueNovember wins!
FreeBSD is a Unix environment, you need to emulate a linux environment! <!--emo&:D--><img src='http://www.unknownworlds.com/forums/html/emoticons/biggrin-fix.gif' border='0' style='vertical-align:middle' alt='biggrin-fix.gif' /><!--endemo-->
mount_linprocfs linprocfs /compat/linux/proc, apparently.

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[root@games (~)]# mount_linprocfs linprocfs /compat/linux/proc
mount_linprocfs: /usr/compat/linux/proc: No such file or directory
<!--emo&???--><img src='http://www.unknownworlds.com/forums/html/emoticons/confused-fix.gif' border='0' style='vertical-align:middle' alt='confused-fix.gif' /><!--endemo-->