How do I know if I have an ETH contract address for an Out Of Gas error? Why did this happen?
If you see an error on Etherscan in regards to an auto-return or exchange from ShapeShift that reads "Out of Gas", we need to manually resend the funds to you. We will ask that you provide an ETH wallet address that does not have contract restrictions.
Why Did This Happen?
There was an error sending the ETH, because the specified receiving address or return address was an ETH contract address. The contract address provided requires more gas than we typically use to send ETH, which is why your trade failed with an error of “out of gas”.
How Do I Get MY ETH Back?
We will manually push the ETH back to you. All we need you to do is send us an ETH address that is not a contract address and does not have contract restrictions. You can provide us this information in your Support ticket.
How Do I Know if I Have a Contract Address?
If you are unsure if the address you have is a contract address, you can locate this information by searching the wallet address on Etherscan.
If the ETH address has restrictions, the top left side of the web page will read "Contract Address" followed by the address. 
If it does not have restrictions, it will read "Address", followed by the address on the top left side of the web page. 
If you have any other questions about this topic, please ask your agent when you reach out to Customer Support.