i really dont think you have any funds in that wallet.
the errors you are having with wallet_1.dat is because the wallet itself was modified by somebody and included those old addresses with funds (only addresses not the private keys).
also from your screenshots you have a balance of ~ 0.1 BTC in that modified wallet and you are offering 1BTC for 0.1 ?? something is not adding up.
do you see all the addresses in the screenshot? I have more than 1 bitcoin, I left such a large reward due to the fact that I am in a hopeless situation