areas mod bug, reproduction steps
1. Join server w/ mod installed
2. Type, /area_pos1 or /area_pos2 some combination of numbers here where one is >31,000
example "/area_pos1 0,0,412122"
3. Server crashes
4. Reconnect, repeat as desired

The issue seems to be in the pos.lua file, lines 32-85. But my lua knowledge is not sufficient enough to fix it myself.
I did it accidentally on a public server on which I have the areas priv, and then tested it on my own server with a fresh install of the areas mod and an account with only interact and shout.