I put everything I've learned here to a repository
 

Thanks for your amazing work, I was surprised to find out that both RUNE and PLAZA installers use the same code base, idk if you made that code base or if you found it elsewhere and just fixed it up but they use the exact same file names and folder structure when you decompile their installers which was wild for me to find out.

Anyway since your fixed version is pretty much the original code for CODEX/PLAZA/RUNE, I chose to make a convenient repository which contains all the tools requires and instructions to compile it. I myself struggled a little. Took me few hours to figure out that you need a modified version of InnoSetup and when I got the original Enhanced Edition, it was still missing several functions and types so I dig deeper in fileforums until I finally found a version with these functions and types in place

The Repository

Please let me know if I forgot something important in the repository or if I'm missing some credits in the README