You don't need to read Japanese. It's a RGSS-RTP Standard not installed error.
I note that's you cited that that have VTX installed. Do you mean RPG Maker VX? If so, that's your problem. AFAIK, you need the
Japanese version of RPG Maker XP for this to work.
I had a quick scoot over to the blog and noticed the orange star-shaped icon on the screen caps. That's RPG Maker XP.
Japanese Version can be found
You must be registered to see the links
. Scoot to the end of the page and hit the big blue bastard of a button.
Lastly, enjoy.
... And I got negative-repped for being helpful. Yeah, thanks arse hole, whoever you may be.