Attaching a Rope Pulley or Hose Pulley to a Contraption (verified with Gantry, Mechanical Piston, and Cart Assembler) causes a game crash, and sometimes the world can no longer be opened.

Minecraft 1.18.2, Create 0.5, no other mods other than JEI - full version details available in the crash report.

crash-2022-07-09_13.22.47-client.txt

This was fixed with 0.5a.