I have tried setting up both CG Miner and BFG Miner with my Asic Block Erupter but I have had issues with both. When setting up BFG Miner, I go to "Properties" to change the target for the shortcut, I get an error saying that the directory I entered is not valid. I read some more about the setup and couldn't find anything that helped, so I tried to use CG Miner instead. The problem I'm having with an error message in the command prompt. It reads: USB init, open device failed, err -12 you need to install a WinUSB driver for - AMU device 2:4 I have installed the driver that makes Block Erupters show up as COM devices, but I don't know what this error is talking about.