I think it's failing when it tries to find /tmp/SBo/package-grub2/usr/man and prints this error:
I'm guessing this is just the man page information, but it's not located there. I looked at /tmp/SBo/grub-2.00/docs and there's a man directory there, so I copied it to /tmp/SBo/package-grub2/usr. Is there something I need to change in the build script (which I don't know where to find, btw) to make it work, or is there something else that's not working with the package that I'm not aware of?

I never installed lilo, but opted to instead install grub2 after installing everything and just use a bootdisk to boot my system, so I don't think there's anything to do with lilo getting in the way.

I'd appreciate any input guys & gals!

I guess you forgot to install first help2man, that is a required dependency of grub2 as stated on this page.

Also, how come you can't find where is the build script as you had to run it to build the package

I'm using sbopkg to download, build, and install slackbuilds. It saves a lot of time. I guess I forgot to look at the "REQUIRES" line in the readme... Thanks for pointing out that extremely obvious fault xD

Installed help2man, rebuilt and installed grub2, perfect completion!

I've been getting next to no sleep so I guess my brain is a little slower right now. Thanks!