vMerkleTree:
2014-03-05 20:26:02 UTC generated 4.00
ProcessBlock: nHeight: 19080
Difficulty Retarget - Kimoto Gravity Well
PastRateAdjustmentRatio = 0.947312
Before: 1b01fc5f 000000000001fc5f000000000000000000000000000000000000000000000000
After: 1b01fc6e 000000000001fc6e25d42259675afabe930023cdc349fc308be220510e44c81a
ERROR: AddToBlockIndex() : Rejected by stake modifier checkpoint height=19080, modifier=0xfa8e81623ecb5f87
ERROR: AcceptBlock() : AddToBlockIndex failed
ERROR: ProcessBlock() : AcceptBlock FAILED
ERROR: BitcoinMiner : ProcessBlock, block not accepted

// Hard checkpoints of stake modifiers to ensure they are deterministic
static std::map<int, unsigned int> mapStakeModifierCheckpoints =
    boost::assign::map_list_of
    ( 0, 0x0e00670bu )
    ( 19080, 0xad4e4d29u )
    ( 30583, 0xdc7bf136u )
    ;

   if (!ComputeNextStakeModifier(pindexNew->pprev, nStakeModifier, fGeneratedStakeModifier))
        return error("AddToBlockIndex() : ComputeNextStakeModifier() failed");
    pindexNew->SetStakeModifier(nStakeModifier, fGeneratedStakeModifier);
    pindexNew->nStakeModifierChecksum = GetStakeModifierChecksum(pindexNew);
    if (!CheckStakeModifierCheckpoints(pindexNew->nHeight, pindexNew->nStakeModifierChecksum))
        return error("AddToBlockIndex() : Rejected by stake modifier checkpoint height=%d, modifier=0x%016"PRI64x, pindexNew->nHeight, nStakeModifier);

bool CheckStakeModifierCheckpoints(int nHeight, unsigned int nStakeModifierChecksum)
{
    if (fTestNet) return true;/ Testnet has no checkpoints
    if (mapStakeModifierCheckpoints.count(nHeight))
        return nStakeModifierChecksum == mapStakeModifierCheckpoints[nHeight];
    return true;
}