@ferdinand Thank you very much for your reply. I currently have the latest version of the program (screenshot).

The program crashes when the cloner is in object mode (circle spline) with cubes placed inside a new Boolean and subtracted from the main geometry( 1st object under boolean).

Reproduction:
1. Open project in Cinema 4D.
2. I play the timeline and after a couple of seconds the program crashes.
3. I restart the program and the project. I remove the nested Boolean objects one by one (Sweep, Cube, and Cloner with Cubes).
4. Deleting the cloner in object mode (a spline circle) with cubes inside solves the crash problem.

Result:
1. Program crashes

Versions:
NOK 2026.0, Windows 11

@ferdinand I just now noticed that the file attached incorrectly. At the time of publication, it's 6:00 PM(time of crash cinema 5:57PM), October 18th, Vladivostok time (UTC+10 (GMT+10)). The program crashes on random seed values. Am I correct in understanding that I can't change material parameter values ​​using the Python tag?
_BugReport.txt

@ferdinand Thanks for the reply. I'll keep that in mind.

Hi. Why does the Python tag or Python node in Xpresso crash Cinema 4D and how can I fix it?

I created a crystal generator project where I use the Python tag to randomly assign generator and spline parameters, and use the Python node in Xpresso to assign the Redshift material(Crystall 1) parameter values ​​(I can't access these parameters via the Python tag). Certain SEED values ​​("Кристалл 1" user data) crash Cinema 4D.
PROJECT - cryst.c4d
BugReport - [_BugReport.txt](You have uploaded too many files at one time. Please try again later.)

@m_adam I still don't understand how to get the id of parameters? How do I know that this parameter has id 500?

@i_mazlov Thank you for your reply. That was very helpful!

Hello again, everyone. I still can't figure out how I can use a button in a tag using python. I need to select two points and fix them in a tag. Can you tell me the correct solution? Use Python Generator.

@ferdinand How nice to know there are professionals like you out there. Thank you for your help, it is encouraging to keep going. Optimized and Works as it should!

@ferdinand I'm sorry, for some reason I didn't realize I had to put the code in right away. Thanks for your help, I will study the code! I'll let you know what happens.

Hey, everybody. The code aligns my objects along the direction of the spline, but the problem is that the corner of the original meshes, do not look along the spline. I have tried c4d.utils.MatrixRotY() and other axes, but I don't get the rotation I want. I feel I can solve this problem somewhere in the green area(screenshot). Is there any solution to this problem? And to have the last object rotated 180 degrees relative to the others. The second screenshot is as it should be.