I am getting this error when the aircraft explodes. This is with Epoch 1.0.5.1. I know the loot table format changed, so maybe that's why? Also, I named it aircraft_crash.sqf:
18:29:35 "CRASHSPAWNER: A-10 just exploded at [16732.2,18174.6,4.09284]!, "
18:29:35 "_iClass isNil, exiting loot...