Thanks for the screenshot!
I see you're missing two files that are part of the LmtDVDVer103, and the NSS patch you currently have is an older one. I realize my guide mentions version 2.3, but I need to update that... Sorry. ^^;; Here's a link to the latest script:
nss-fullpatchver2.4
Also, just to make sure... Your System Unicode Locale is set to Japanese, right? You've played other Japanese Visual Novels before and they worked? Sometimes games will be black like this when your System Unicode Locale isn't set to Japanese. This option does NOT change your computer's language, and it's NOT the timezone function. It's an option that allows Japanese computer games to run on your computer, and display text in some instances.