Same issue, stuck on 16 blocks.
Tried deleting the block data and restarted.
Added nodes in config file and added in correct folder.
Added nodes in config file and pointed aiblocks.exe to the file.
Nothing worked.
Yes..same here..hopefully it gets fixed soon..
I'm also having trouble synchronizing now myself. As soon as our main developer wakes up, I'm sure he'll be able to fix this rather shortly. I personally don't have the skill to make any changes without risking screwing things up.
Watch the thread, I will post here when everything's all good and well.