I had my computer crash and before that I had backed up my wallet.dat.  I reloaded the new wallet on the new hard drive and it pulls up all my transactions except the ones after 12/30/13.  An address is also missing which had a decent amount of bitcoins on it.  I looked in the block chain and the coins are still there.  I tried a rescan multiple times with no result.  If anyone can help me with this I will be offering a 1.5 BTC reward.