I created a brand new 1.16.4 pack that a user has thankfully managed to crash using Create a couple of times now.

client report 1: https://gist.github.com/d584d4bb88849b41faa0808d911a7b36

client report 2: https://gist.github.com/bd8e334a1a46ffb129c010806adba2c1

I'm playing ATM-6 on the modpack version 1.7.7 and create version 1.16.5_v0.3.2c but I'm still having this error (NullPointerException).

Someone continues with this problem or know how to solve it?

(I think that what is crashing is the create cart assembly).

The most strange part of this error is that only occurs sometimes, I have a cart assembly running over and over and just sometimes it crashes the game.

Same issue when riding anything from Wyrmroost.
Started after updating to create-mc1.16.3_v0.3c.jar

https://pastebin.com/B4bs3z7n

based on this I'm going to downgrade and wait for an update.

Same experience for one of my users, does not happen for all users however

I had the same issue yesterday playing on a server, but it's specifically in my account, if I logging with another user name, the game didn't crash, and the server doesn't crash, just my game
https://gist.github.com/DesolateElf-dev/9cb3f5dca6ec0f7caec64b4b11df5054

Duplicate of #669

This was addressed in 0.3e, feel free to re-open if its still an issue. Cheers~