The current crashes that are happening I believe are due to my placing an experience obelisk nest to a vacuum hopper (was not intentionally trying to cause a crash). It crashed upon my placing it and attempting to get back into the server has caused it to crash. Won't be joining back onto the server till its been addressed to avoid crashes. (Please don't reset my island, are you able to remove either all experience obelisks or vacuum hoppers, or reset the chunk? I very much would not want to lose the progress I have...)
