can't compile xorg clients

[h]

i made:

pkg_delete -f nvidia-driver-1.0.7676_1/ ; cd /usr/ports/x11/xorg-libraries/ 
&& make install clean && rehash && cd /var/db/pkg/ && portupgrade xorg-* && 
cd /usr/ports/x11/nvidia-driver/ && make install clean

with FORCE_PKG_REGISTER=yes in make.conf.

and it worked.