Ah, this must be related to your other thread:
Signed transaction failed, no?
-snip- but if you import this wallet.dat to newest version of GUI and enter passphrase an error will appear "Some keys decrypt but some not" but if you use an older version you will unlock wallet but not able to spend those BTC
The error is just a minor detail and it must be not yet included in the code of the 'old version', what's happening is the background is the same:
That wallet doesn't have the correct key to spend any of those three coinbase transactions
(
in exception to genesis block's which can't be spent even if you have the prvkey).