Instruct: Classify a given Amazon review as either positive or negative.
Query: A piece of junk

It is supposed to work on Macs running OS X but the software crashes when you click the popup box that tells you to make sure it is plugged in. Called customer service and they told me to restart my computer and reinstall the software, then restart it again. Still didn't work. Tried it on two other Macs running slightly different versions of OS X still didn't work. This was purchased at a Big Lots store so that should have been a clue that Coby is dumping their defective product.