I updated the client, but I'm getting the follow error: "WARNING: Checkpoint is too old. Redownload Blockcharin. If warning persist contact the Development Team."
I think you have to delete all but your wallet.dat from user >appdata > roaming > hobo and re-download the block chain.
I updated few days ago and the message has gone.
I was thinking that, maybe it kept the old blockchain some how from the previous version. I'll try it out later today.