error: %post(NVIDIA_kernel-1.0-4191.rh80up_2.4.18_18.8.0) scriptlet failed, exit status 1 ...

I had to recompile my kernel (2.6.0test11) so i could take out scsi emulation, so i untarred a new source of the above version, copied over the .config, did oldconfig, did menuconfig and all that jazz ...