My core wallet is stuck at block 1441636, I've reindexed it 3 times, anyone any ideas?
Have you tried deleting the chain and resyncing from the beginning?
Just tried it, now it's stuck on block 1430000
That was the point of the hard fork. Are you by chance on an older wallet? You should be on 4.0.3 and if not I'd suggest downloading and install the new wallet from http://digibyte.co