Yeah I added Nicehash support. But after that, when some more people started using new version, I found that their pool does not support my miner, the problem is on their side:
https://bitcointalk.org/index.php?topic=638915.msg16255606#msg16255606
They don't want to change anything so I must change code in my miner again to support this pool, these change require a lot of time so currently Nicehash is not supported.