Tell more about your set up. And provide the exact error, otherwise we are only guessing at what the problem is.
sorry not very good with this Lol.
My setup..
Server:Deepbit
my device is selected as ATI RV770
cpu affinity is checked at 0 (just left it at default cause i have no idea what this is)
i dont have anything under extra flags.
Um, in order for me to get exact error message i have to let it run for a couple of hours,
but last time i started mining it gave me a different error than the I/O error.
i think this is what you meant by setup lol.