New to this here, so please be patient with me. I downloaded MacMine Grindseed7 which I believe is the latest.

I got CPUMiner to detect my Dual Miner USB which I got to play with, but I get this in the screen, and it doesn't seem to be hashing.

[2014-03-11 18:57:15] 0: GC3355 chip mining thread started, in SINGLE mode
[2014-03-11 18:57:15] 0: Open UART device /dev/cu.usbserial-000014FAB
[2014-03-11 18:57:16] 0: Set GC3355 core frequency to 600Mhz
[2014-03-11 18:57:16] Stratum detected new block
[2014-03-11 18:57:17] 0: Dispatching new work to GC3355 LTC core
0: >>> LTC : 55aac000808080800000000001000000
0: >>> LTC : 55aac000c0c0c0c00500000001000000
0: >>> LTC : 55aaef020000000000000000000000000000000000000000
0: >>> LTC : 55aaef3020000000
0: >>> LTC : 55aa1f2817000000
0: >>> LTC : 55aaef000500e082
0: >>> LTC : 55aa1f2816000000
0: >>> LTC : 55aa1f2817000000
0: >>> LTC : 55aa1f00000000000000000000000000000000000000000000000000000000f8ff07000019594b6 9940bc9c152fa71f3b90733768f56c38977a58ad4064619f6b2c46edd00000002d30b7dad7725d7 22c90dd6b97a4223b4970fd97bb145926c6aec512aea648f6a24544a7739e75303c291c4aec17e9 5d88e1edc534e14de93cf6e112b29bdf416531fbe791b0dd50600000000ffffffff12345678
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I am using this Manual string

--freq 600 --gc3355=/dev/cu.usbserial-000014FAB

Any help would be much appreciated.