The initialise script is to do with setting up V4.2's injectable morphs, which work in a different way to previous V4 versions. That's the non-technical explanation - there is more about this in her documentation.

You need to run the script after installing V4 itself, and again after installing any add-on morph products such as V4 Morphs++ or V4 Muscle Morphs.

"If I were a shadow, I know I wouldn't like to be half of what I should be."
Mr Otsuka, the old black tomcat in Kafka on the Shore (Haruki Murakami)