hi i am running cudaminer in x86 but it just opens and closes instantly. here is my script, can u see what is wrong please thank you.

cudaminer -l K20x32 --algo=keccak --url stratum+tcp://erebor.dwarfpool.com:3339/ --user mbmRnC83QsmVnarTi1WVJFYYZ5W7SjDmsC -p 1