In about 5 hours from this post, I'd like to take Skyblock and Dirtblock offline so I can try updating them to Minecraft 1.11. The Skyblock plugin should work fine, the only concern I have is with challenge rewards possibly needing to be reconfigured. I will be doing them one at a time, so hopefully you guys don't mind switching to a different server as they are taken offline. If all goes well, the outage should only be about 20 minutes per server. I will also need to keep all servers offline briefly after the nightly restart, as well as moving the restart 1 hour earlier than usual. Thank you for your patience and understanding.
Maintenance has been completed. Skyblock and Dirtblock are now on Minecraft 1.11. It appears that the upgrades went well, with one minor issue. If you have completed a challenge 100 times or more, it will no longer display the icon for the challenge in the /c menu. You should still be able to complete the challenge with /challenges c "name" or with [usb] signs on chests. I have submitted a bug report to the developers for this issue. If you find any other issues, please post a bug report. Thanks!