ERROR: AddToBlockIndex() : Rejected by stake modifier checkpoint height=0, modif

[supercanada1]

try to create an altcoin, genesis block problem: what is the problem? thanks

Opened LevelDB successfully
CBlock(hash=00000efb1f5eb99090112a05f88ac104cd6fc91a97f87dee547c2f89b77a32fc, ver=1, hashPrevBlock=0000000000000000000000000000000000000000000000000000000000000000, hashMerkleRoot=77965f12440eac9d815bcaf687f8e64bdc1c72c599f47a0d39db52ec65cb08b4, nTime=1473259858, nBits=1e0fffff, nNonce=397230, vtx=1, vchBlockSig=)
  Coinbase(hash=77965f1244, nTime=1473259858, ver=1, vin.size=1, vout.size=1, nLockTime=0)
    CTxIn(COutPoint(0000000000, 4294967295), coinbase 00012a0b63726561746520636f696e)
    CTxOut(empty)
  vMerkleTree: 77965f1244
block.GetHash() == 00000efb1f5eb99090112a05f88ac104cd6fc91a97f87dee547c2f89b77a32fc
block.hashMerkleRoot == 77965f12440eac9d815bcaf687f8e64bdc1c72c599f47a0d39db52ec65cb08b4
block.nTime = 1473259858
block.nNonce = 397230
CBlock(hash=00000efb1f5eb99090112a05f88ac104cd6fc91a97f87dee547c2f89b77a32fc, ver=1, hashPrevBlock=0000000000000000000000000000000000000000000000000000000000000000, hashMerkleRoot=77965f12440eac9d815bcaf687f8e64bdc1c72c599f47a0d39db52ec65cb08b4, nTime=1473259858, nBits=1e0fffff, nNonce=397230, vtx=1, vchBlockSig=)
  Coinbase(hash=77965f1244, nTime=1473259858, ver=1, vin.size=1, vout.size=1, nLockTime=0)
    CTxIn(COutPoint(0000000000, 4294967295), coinbase 00012a0b63726561746520636f696e)
    CTxOut(empty)
  vMerkleTree: 77965f1244
ERROR: AddToBlockIndex() : Rejected by stake modifier checkpoint height=0, modifier=0x0000000000000000
ERROR: LoadBlockIndex() : genesis block not accepted