Just few more notes regarding the above -
@swain, your node is working correctly. It downloaded block 6765063, just to find out that the subsequent block is going to have a protocol version that it doesn’t know how to support. Since the node is unfamiliar with that protocol version, it would not be able to perform any type of validation on the block. To ensure that all the state of your node is secured, no further blocks would get downloaded.
This is completely unrelated to the hard shutdown that your computer might or might not have been through.
As @Tim and @fabrice suggested above, upgrading to the latest version is your best course of action. Also, I would recommend that you would set up an auto update for the Algorand platform, as we plan to have additional updates as the platform evolves.