OK first error fixed, wondering if anyone is able to assist with this one (have tried 3 computers)

When i go to start the MN (masternode start) i get this error http://prntscr.com/g5cqnw, exactly the same on all 3 computers.

Is this because maybe my coins haven't been in my wallet long enough? I have over 2k in the wallet and i was pretty sure MN only need 1000...

Thanks in advance