OK there was a bug in the coin we forked from, new code on github and windows wallet here: https://www.mediafire.com/?ifdawh5smb0028n

Edit: to be clear, you need to download the new wallet to receive new blocks, you can see the code change on github, it was a simple fix (once found)

Edit2: bittrex have been informed, mac wallet later, further updates for checkpoints later.

Edit3: No need to delete chain etc, just replace exe (a member asked so thought I better say here)