Please GPU mine or use an external CPU miner from Darkcoin.

Standalone CPU Miner (beta):
Source: https://github.com/ig0tik3d/darkcoin-cpuminer-1.2c
Source: https://github.com/elmad/darkcoin-cpuminer-1.3-avx-aes  (Faster if you have the AES-NI instruction set)
Windows: https://mega.co.nz/#!qwoEUaAC!kiiJoOLHLOfXkzAG7JSq2HQA6rb9X1tPDyvAXMzAvoo
Windows 1.3 avx-aes: https://mega.co.nz/#!L1YgUIwB!_Xby8q1OkZCpatrJAkm9GJXrz2vLvYCiLgIsGFB4ph8