have the same issue on Mac electrum v.3.0.5
have a Zero-value transaction listed and the electrum got frozen. when I double-click on the transaction, the program crashes so I can't even know the TX to check it on the blockchain.
Get your address and the amount you should've received and we can trace the TX from the blockchain. Can't do very much from there.
Onto what someone said about my post, it looks like it doesn't understand the hash as if it'd imported successfully, even if it was the wrong wallet it'd still import it with a message along the lines of "transaction not related to wallet addresses".