Hm.. i still can't seem to get my old wallet.dat connected with the right fork.
Is it possible, that if the old wallet.dat went on the wrong fork, you can't connect it with the right fork?
That is possible but you can fix it by giving the flags: -reindex -rescan. This will repair the wallet.dat for the right fork.
If you do not understand how to do it, export your private keys from the debug window (on wrong fork) and import the private key in a new wallet (on the right fork).