Yes, the md5sum checks out. The files I downloaded match the ones from the download site. The two files being recommended by NVchooser.sh are the NVIDIA_kernel-1.0-4191.src.rpm and the NVIDIA_GLX-1.0-4191.i386.rpm.
I do an rpm --rebuild NVIDIA_kernel-1.0-4191.src.rpm which results in error's. I have included with this posting a output of these messages.
I do indeed have the kernel source so I dont believe that is an issue.
I am doing as you suggested. This post should have the log.txt file from the rpm --rebuild of the kernel.src file.