What nodes do you have in your .conf file? I was able to sync by first downloading blocks, waiting for that to complete, and then rebuilding the block chain.
I find the reorganize command to be somewhat glitchy so I prefer to do the complete rebuild with the rebuild block chain command.
Nodes:
addnode=node.gridcoin.us
addnode=gridcoin.asia
addnode=grcmagnitude.com
I tried the Advanced > Rebuild Block Chain, but nothing happened after.
My next step was to download the snapshot and search for valid nodes, but the Find CPID failure made me think the problem was due to something else.
You could try adding
addnode=gridcoin.crypto.fans
which is the gridcoinstats.eu node to your .conf file.
Rebuild block chain needs a bit of time to work, so it's best to let it sit for a while after you have downloaded blocks or have the snapshot in place.
I've let download blocks run for a really long time, probably at least a day, but maybe that wasn't enough. I'm going to try the snapshot and see what happens. If it's the CPID I guess I'll find out.