Start with something very, very simple as a test. Create a cube. Create your keyframe at the start position. Move it to the next position and create your next keyframe. Nothing more. Then export as FBX and bring it into MAX. What happens?
BTW - there is nothing in the tutorial that I wrote that would cause MAX to crash.
Intel i9-10900K 5.10GHz, 64 GB RAM, Nvidia GTX 1080 ti 11GB, Windows 10 64-bit, dual monitor display