MLX90615 IR Thermometer

I’m trying to get the Grove IR Thermometer to work, but I can’t read from it using any i2c tool or my own software. So far I’ve successfully read from anything (including the much trickier HDC1000 and the SI114X), but this one is a blank.

Should I assume my device is dead? It doesn’t give an I/O error on the correct slave address (0x5b), but it doesn’t give any data back either.

(Also, how can I set my nick to something more useful?)