Check that the custom token you're adding is SHT, there is conflict with SHIT name in MEW. Also check that your MEW is on mainnet, not or ropsten or other testnet.
You can also try other wallets that support ERC20 tokens. For example log into https://etherdelta.com/#SHT-ETH with your private key, this will show your tokens and will let you trade/send them.
Thanks for your help. I think I used SHIT as the token name, from your response I can see I should be using SHT...Im pretty sure it will work. Thanks again.
Hmm.. what you've done is correct. It should work.