greetings! Please help me! I install Datasmith for 3Ds Max, and then as soon as I enter 3Ds Max, the program closes automatically. What is the reason?

We are aware of the problem, but we did not manager to reproduce it yet.
There is a long discussion here Datasmith exporter 5.3 causes crash 3DSMax 2024

You can try to use deatasmith exporter 5.2 if that works, else in the thread someone propose some workaround that seems to give some results except for the direct link feature.