Hi, I only have 1 usb asic miner so im new to mining. Its been mining for almost a week and this morning it started showing this error.
Im using cgminer 3.1.1 so i could you the -s COM# at the end which results in a few more hashes/s and its on Win XP
THis is the code i use- cgminer-nogpu.exe -o eu-stratum.btcguild.com:3333 -u drinu16_1 -p 123 -S COM3
and this is the error

I had installed this
http://www.silabs.com/products/mcu/Pages/USBtoUARTBridgeVCPDrivers.aspx and its has been working with it since
What am i doing wrong ??
Im using BTC Guild and also tried it on another pc and still the same.
1. We do not support old versions of cgminer
2. BTCguild is currently under an attack so it is actually dead intermittently.