2017-04-29 20:26:14 ProcessBlock: ORPHAN BLOCK 2424, prev=4b4622642be27b7d7239e6484bb6e3d3519fb4a28407befacb5824e9798677af
2017-04-29 20:26:14 ProcessBlock: ORPHAN BLOCK 2425, prev=4a14d7e0f2fe340a7fa583273abc05d7cd95495145ac6278c2b4a7de12c805c4
2017-04-29 20:26:14 ProcessBlock: ORPHAN BLOCK 2426, prev=811a4262ff48c57ff5edf7cae3f99bb7f1b2fcfa0de54291709c3bca37ea71c4
2017-04-29 20:26:14 ProcessBlock: ORPHAN BLOCK 2427, prev=ccf24a15237723a60b6f5c3e57e8e114c4501811a7a0b25d9171e2e90936d29f
2017-04-29 20:26:14 ProcessBlock: ORPHAN BLOCK 2428, prev=395819cb2630b224d3ee65265afc41cd3976f2b39ab4bd61a51bf5623c41f467
2017-04-29 20:26:14 ProcessBlock: ORPHAN BLOCK 2429, prev=f329dacc9e199510b2c4f219c5f99cd56c73afd9c5680e3464135313f02ef70c
2017-04-29 20:26:15 ProcessBlock: ORPHAN BLOCK 2430, prev=5ea616a69eada4a3bf16dcd5268d80037130f4e9024db6b4114f5538ec13dafd
2017-04-29 20:26:15 ProcessBlock: ORPHAN BLOCK 2431, prev=fd8e5d6e488829ccdc71a4b20ec3c2269a2989d40452eada30b2d09decaa3f45
Use the bootstrap follow these instructions: https://bitcointalksearch.org/topic/m.18802710
Orphans can happen. Some nodes are still old and are sending out lots of orphans.