I funded an Ethereum Wallet with bitcoin months ago. Then I took some of this ETH and bought into the DAO. I later did my best to retract the money from the DAO and if I remember correctly I had all my ETH back in my wallet.
I just upgraded the client (on several machines at home, including a Windows computer and my Mac) and now my wallet shows empty, I can't find any transactions on etherchain.org.
Where do I start troubleshooting this? There is not enough money in this wallet to become a huge in my life but it's enough to make me feel a little panicky right now. Any help would be appreciated.