Mac wallets updated :

v2.4.1 : https://mega.co.nz/#!9cwTxKQD!vfE0g492Mj1s9ndaj7ewJ0-_KfWrcEXxkj7jNBPGAHs

v1.3.4 : https://mega.co.nz/#!gQJUzKxa!bYlK877j7kkFwDz3Q3e6iXBTDlx4YntL1KT8ul1FMkc

You need to re-download the blockchain, backup your wallet.dat