Our apologies we just received contact from C-CEX a short while ago everyone please update your windows wallet and see the new source for pools on our OP.
Windows Wallet:
https://mega.co.nz/#!gZkDjDoa!ZcHV3CQFV59wgKemQi6aSa7xcx-CK5Ud6yzlNhF29wI
Joincoin Source:
https://github.com/joincoin/joincoinEveryone must update!
If you still have issues getting past block 416 first SAVE your wallet.dat file, then delete the data directory for Joincoin in roaming. Until C-CEX officially sends a tweet out the wallet has been updated then please do not transfer coins from there yet. We can all mine now though.