Update 1:

This issue has to do with the GRC Superblock. So, what is the superblock?

GRC is unique in that it communicates through a blockchain (GRC Client) while utilizing the BOINC platform. The superblock, essentially, is the block that ties the two platforms together. It is produced about once a day. Inside its walls are the CPIDs of new users (you know how you have to wait after getting GRC to get a CPID? this is why), and the amount of work users have done since the last superblock was spawned.

Once in a while (very rarely), there will be a connection error between some aspects of BOINC and the GRC nodes. That is where we are at right now.

More information to come.

More details about the backend of GRC can be found in this tutorial by @sc-steemit.

https://steemit.com/gridcoin/@sc-steemit/solo-mining-a-guide-trough-magnitude-neural-network-and-beacons