Objects from "objectGroup" section are not loaded

Well, thank you to the person who solved the problem with classes. Now it’s really possible to use them, but… The “objectGroup” section is still not working. There are a lot of cool things in this section that can be used, but when you try to see these objects, the game freezes.
That is, I can put an object with this class, but when I try to display it using “Show units”, the game freezes and no longer reacts at all. I assume this is also caused by a change in location of classes. If someone can help with this problem, I would appreciate it.