i thought i upgraded to freeBSD-STABLE 6.2

[KAYVEN RIESE]

i thought i upgraded to freeBSD-STABLE 6.2 but i just tried
to install this timeseal port and got this strange message
that seems to contradict this:

bsd@/root# cd /usr/ports/games/timeseal
bsd@/root# make; make install clean
On FreeBSD before 6.2 ports system unfortunately can not set default 
X11BASE by itself so please help it a bit by setting X11BASE=${LOCALBASE} 
in make.conf.
On the other hand, if you do wish to use non-default X11BASE, please set 
variable USE_NONDEFAULT_X11BASE.
*** Error code 1

Stop.
On FreeBSD before 6.2 ports system unfortunately can not set default 
X11BASE by itself so please help it a bit by setting X11BASE=${LOCALBASE} 
in make.conf.
On the other hand, if you do wish to use non-default X11BASE, please set 
variable USE_NONDEFAULT_X11BASE.
*** Error code 1

Stop.
bsd@/root#

why would this be and what diagnostics/actions can help me to
do something about it?