Issue with Presale Wallet

Hi all!

I have an Ethereum presale JSON file from when I participated in the presale in October 2014. The transaction for the BTC wallet confirms that I sent the 0.04 BTC for the purchase, but when I look up the ETH address, it says there's no Ethereum in that wallet.

A) Is there any way for me to still obtain the crypto?

B) What would that process look like?

Thanks in advance!