In "Step 2 - Deposit 1 MFT and whitelist node.", after attempting to submit I get an error: Transaction Error. Exception thrown in contract <img width="330" alt="image" src="https://user-images.githubusercontent.com/4494929/46692456-53d8f480-cbd5-11e8-91e4-fee7f1453928.png">
In "Step 2 - Deposit 1 MFT and whitelist node.", after attempting to submit I get an error:
Transaction Error. Exception thrown in contract