When the freecam (enterable by pressing the HOME key under diag) is moved under the terrain or through a building while a nearby player shoots, the game client freezes and immediately crashes to desktop (CTD).
This affects not only the developer freecam, but all cameras inherited from class Camera, thus also affecting popular mods like Community Online Tools (which also uses Camera for its freecam).
This seems to be a new problem under DayZ 1.24.