Wow, I thought the soldat devs had abandoned it entirely, cant believe a new version was released. And it looks like they made some awesome changes and additions, especially graphics wise. Anyway, it seems like they made some massive, sweeping changes to the scripting system, and they have yet to give any documentation on them. They say that they are going to also add the ability to set specific scripts to not use these features, and instead revert to the older system to fix compatibility issues, but this is not yet available.
Until they either give some documentation or do the other change mentioned theres not much I can do.
Here is what they said in their update announcement verbatim:
This new Soldat version might introduce some issues with old mods.
We will soon provide a compatibility mod.ini file to fix this,
along with full documentation on how the new modding system works.
And regarding the intro saying 1.9.0, I just forgot to update the .txt file that contains the intro and other messages when I updated the script last. If you want to be sure you are running the latest version of the script you can open the ZRPG.pas file in notepad, and at the top it should say version 1.9.2, last updated september 7, 2015.