There is an assert in `CWalletTx::RelayWalletTransaction` that gets hit.  All other code paths check `fBroadcastTransactions` before getting to `CWallet::ResendWalletTransactionsBefore` except the rpc call `resendwalletransactions`.

It's an easy fix, but we just need to decide whether to throw an error or return an empty array of rebroadcasted transaction ids.

Should be fixed for 0.15.
int nVersion = s.GetVersion();
        if (!(s.GetType() & SER_GETHASH))
            READWRITE(nVersion);
        READWRITE(vchPubKey);
    }
};
template <typename ContainerType>
bool CWallet::DummySignTx(CMutableTransaction &txNew, const ContainerType &coins) const
{
    
    int nIn = 0;
    for (const auto& coin : coins)
    {
        const CScript& scriptPubKey = coin.txout.scriptPubKey;
        SignatureData sigdata;
        if (!ProduceSignature(DummySignatureCreator(this), scriptPubKey, sigdata))
        {
            return false;
        } else {
            UpdateTransaction(txNew, nIn, sigdata);
        }
        nIn++;
    }
    return true;
}
#endif