Errors Building kmdls Myself

Paulo (or anyone):

I've been trying to use Paulo's directions found here:
http://people.atrpms.net/~pcavalcanti/LCG_kernel_modules.html#user to
build my own set of nvidia kmdls.  I've been practicing on the
existing kernel before moving on to the latest kernel, but I keep
getting the error below:

-> License accepted by command line option.
-> Installing NVIDIA driver version 302.17.
-> Skipping check for conflicting rpms.
ERROR: No NVIDIA driver is currently installed; the
'--kernel-module-only' option can only be used to install the NVIDIA
kernel module on top of an existing driver installation.
+ test -z ''
+ exit 1
error: Bad exit status from /home/ggalt/rpmbuild/tmp/rpm-tmp.nlq8Xy (%install)


I get this error after executing the command: ./bkmdl.sh 3.4.2-1.fc16
nvidia-graphics302.17-302.17-147.src.rpm

I currently have the following installed:
nvidia-graphics302.17-libs-302.17-146.fc16.x86_64
nvidia-graphics302.17-kmdl-3.4.2-1.fc16-302.17-146.fc16.x86_64
nvidia-graphics302.17-302.17-146.fc16.x86_64
nvidia-graphics-helpers-0.0.30-33.fc16.x86_64
nvidia-graphics-devices-1.0-6.fc16.noarch


Any thoughts?

Thanks,

George