I have been unable to sync the wallet, each time it stops at block 419999
ProcessBlock: ACCEPTED POW BLOCK
received block f7bb4b236fd97993a06e
ProcessBlock: ACCEPTED POS BLOCK
received block 00000001feb4396621eb
ProcessBlock: ACCEPTED POW BLOCK
received block 0000000906b7ffd3f935
ProcessBlock: ORPHAN BLOCK, prev=0000000b681c1f4e0311
Flushed 0 addresses to peers.dat 104ms
received block 38b84b9264d106a0932a
ERROR: CheckProofOfStake() : INFO: read txPrev failed
WARNING: ProcessBlock(): check proof-of-stake failed for block 38b84b9264d106a0932a6bcf8658dd8ee6112daf8634b5eca359f662e89ac70b
ThreadRPCServer method=getinfo
received block 8f1168a2ec8fd62075db
ERROR: CheckProofOfStake() : INFO: read txPrev failed
WARNING: ProcessBlock(): check proof-of-stake failed for block 8f1168a2ec8fd62075db3bb5bb3d5bdf7a62c2d880a25d93b3ff12b6c8a5b033
received block a481ae5ecc9eb783fc09
ERROR: CheckProofOfStake() : INFO: read txPrev failed
WARNING: ProcessBlock(): check proof-of-stake failed for block a481ae5ecc9eb783fc09c4d8bcc371f54f2fccd42f2fff0a1fbdfb9cddd728cf
Flushed 0 addresses to peers.dat 36ms
received block 38b84b9264d106a0932a
Any ideas?