I have a problem with the ASIC Miner USB Erupters and CGMiner 3.1.1.  
I had two working fine with CGMiner 3.1.1 on my computer then I shipped them to someone else and now they can't get one of the USB Miners to work.

Steps taken on the affected computer:
Installed zadig
Installed USBtoUARTBridgeVCPDrivers
Rebooted the computer, did not change any of the drivers.  Zadig reports that the Erupter is using the correct USB to UART driver.

Verified that the Erupters are using COM5 and COM7 in device manager

Ran CGMiner 3.1.1 with the following arguments:
cgminer-nogpu.exe --icarus-options 115200:1:1 --icarus-timing 3.0=100 -S //./COM5 -S //./COM7

One of the devices works fine and one always gives the following error:
Started cgminer 3.1.1
Icarus Detect: Test failed at //./COM5: get 00000000, should: 000187a2
Reset failed! not an Avalon? (0: c1 4f 87 64)
Avalon: Goto idle mode

The device on COM7 always works so I'm trying to find out if it is a software problem or a hardware problem.  Any help is appreciated.  Thanks in advance.

EDIT: I read 3.2.2 will fix many usb issues.  Will give that a shot and report back.