Does not work POS. In the Log file there is always such a message:

===== Pending Checkpoint Age = 528 Hash = 385c95fd271771a Height = 1549088
Generated 19.698047 Nexus
Connected 000000d2581e012249fe...
SetBestChain: new best=000000d2581e012249fe  height=1549104  trust=3428389  moneysupply=52199238.569118
2RgsY9BLJekLniuVHHZ6CwucdZHKGkYwqd9NBxDCaskjbBD3M2U Credited 12.584575 Nexus | Balance : 12.584575 Nexus
2SJzPMXNPEgW2zJW4489qeiCjdUanDTqCuSNAMmZXm1KX269jAt Credited 6.573197 Nexus | Balance : 22424.670702 Nexus
2SDnQuMgW9UdESUUekrrWegxSHLQWnFWJ2BNWAUQVecKNwBeNh5 Credited 0.540275 Nexus | Balance : 6578.513007 Nexus
ProcessBlock: ACCEPTED 000000d258
Stake Minter : New Best Block
ERROR: CTrustKey::Expired() : Block Age Beyond Expiration Time.
ERROR: CTrustKey::Expired() : Block Age Beyond Expiration Time.
ERROR: CTrustKey::Expired() : Block Age Beyond Expiration Time.
ERROR: CTrustKey::Expired() : Block Age Beyond Expiration Time.
ERROR: CTrustKey::Expired() : Block Age Beyond Expiration Time.
ERROR: CTrustKey::Expired() : Block Age Beyond Expiration Time.
ERROR: CTrustKey::Expired() : Block Age Beyond Expiration Time.
ERROR: CTrustKey::Expired() : Block Age Beyond Expiration Time.
ERROR: CTrustKey::Expired() : Block Age Beyond Expiration Time.
ERROR: CTrustKey::Expired() : Block Age Beyond Expiration Time.
ERROR: CTrustKey::Expired() : Block Age Beyond Expiration Time.
ERROR: CTrustKey::Expired() : Block Age Beyond Expiration Time.
ERROR: CTrustKey::Expired() : Block Age Beyond Expiration Time.
ERROR: CTrustKey::Expired() : Block Age Beyond Expiration Time.
ERROR: CTrustKey::Expired() : Block Age Beyond Expiration Time.
ERROR: CTrustKey::Expired() : Block Age Beyond Expiration Time.
ERROR: CTrustKey::Expired() : Block Age Beyond Expiration Time.
ERROR: CTrustKey::Expired() : Block Age Beyond Expiration Time.
ERROR: CTrustKey::Expired() : Block Age Beyond Expiration Time.
ERROR: CTrustKey::Expired() : Block Age Beyond Expiration Time.
ERROR: CTrustKey::Expired() : Block Age Beyond Expiration Time.
ERROR: CTrustKey::Expired() : Block Age Beyond Expiration Time.
ERROR: CTrustKey::Expired() : Block Age Beyond Expiration Time.
CTransaction::GetCoinstakeInterest() : Total Nexus to Stake 669.491812 Generating 0.044681 Nexus from Average Age of 297355 Seconds at 0.500000 % Variable Interest
Stake Minter : Created New Block 03124cd960d6c6e4e22d
Stake Minter : Staking at Trust Weight 2.182871 | Block Weight 0.000000 | Coin Age 297355 | Trust Age 0| Block Age 0
getblocks -1 to 00000000000000000000 limit 1000
getblocks -1 to 00000000000000000000 limit 1000
getblocks -1 to 00000000000000000000 limit 1000
getblocks -1 to 00000000000000000000 limit 1000
getblocks -1 to 00000000000000000000 limit 1000
2017-09-05 18:39:31 UTC Flushing wallet.dat
Flushed wallet.dat 8ms