There is a bug in Bitsend regarding masternode outputs and remote starting of masternodes.
If you have "mnconflock=1" in your bitsend.conf, masternode outputs are locked so that you can't spend them inadvertently, which is good. Unfortunately, this also prevents you from starting your masternode remotely, because the wallet can't find the 25000 BSD VIN anymore, which can be seen as a bug.
So, to start your masternode remotely, temporarily set mnconflock to 0 in your bitsend.conf, restart wallet and start your masternode.