New updates coming! I know version 1.8.0 is taking long, but I'm doing my best to balance both generations in the tool so they have the same features. Today I finished writing the saving code for Gen IV scripts, and it works like a charm. Saving is a bit slower than reading, but it depends on the amount of scripts and functions and the command extension. The progress bar will animate when saving so you'll know when the tool is working.
Also, about a week ago I implemented support for Gen V buildings, including both the building editor and the list. This is how it looks like:
Thanks for your support, I hope to release this new version very soon! :)