Every time I make a Encased Fan, Windmill or Water Mill and have it powering a Drill ( Pointing Down ), I will save the game and EVERY time I try to get back into the game, it crashes. I have tried using only Create with no other mods, with a few other mods and it still happens.

Crash Reports
crash-2021-02-18_12.55.24-client.txt
crash-2021-02-18_13.02.56-client.txt
crash-2021-02-18_13.04.52-client.txt
crash-2021-02-18_13.09.56-client.txt

Try to update Optifine to version 1.16.5_HD_U_G6, it works on 1.16.4.

I will try that now.

New Crash Report. No Rope Pulley this time.
crash-2021-02-18_13.33.04-client.txt

Try to update Optifine to version 1.16.5_HD_U_G6, it works on 1.16.4.

I will try that now.

New Crash Report. No Rope Pulley this time.
crash-2021-02-18_13.33.04-client.txt

Optifine update allowed me into the world.

Try to update Optifine to version 1.16.5_HD_U_G6, it works on 1.16.4.