2 crashes in a row, had built structures in Blueprint. Banded sheets, froze some structures, and was moving helix when first crash occurred.
Second crash, I turned off view for symmetric chain and got 1 step further, was able to move first helix but upon trying second, crash.
Both Segmentation Faults, thread 11. (this is current and recorded issue for the monomer puzzles that use blueprint and mutate, along with the Thread 10 "double free" and variations on that theme).
Devprev latest update being run, mac OS, the usual.
Mac crashlogs for both attached