Getting this error...
Win 7 x64
[2013-08-23 18:59:49] Started cgminer 3.4.0
[2013-08-23 18:59:49] Started cgminer 3.4.0
[2013-08-23 18:59:50] USB init, open device failed, err -12, you need to instal
l a WinUSB driver for - ICA device 2:1
[2013-08-23 18:59:50] Icarus detect (2:1) failed to initialise (incorrect devic
e?)
[2013-08-23 18:59:54] Need to specify at least one pool server.
Input server details.
URL:
EDIT: Did the ziag thing seemed to work alright

Device drivers

ziag is the USB to UART converter. 3.1.1 needs that, 3.4.0 does not.