As a continuation of the post published in Steemit and due to its criticality I remind you of the need to update your Gridcoin Wallets to the latest version.
Here I leave the link to the Official publication:
Alert: Wallets below v4.0.0-Mandatory will fork on 1420000! http://redd.it/9pgg7m
I remind you that there is a Windows Client, Linux Client... even Virtual Machine, Docker
Keep "Crunching" !