So awhile ago we got a new antivirus. I hadn't played minecraft in a while, and none of my singleplayer worlds would work, they would load for awhile and then crash. Multiplayer and realms still worked though. However, when i used 1.6.4, the latest version I can run singleplayer on, when i go back to 1.8, multiplayer and realms doesn't work, it doesn't crash, just comes up with an error: java.lang.nullpointerexeption: group. I'm not sure what to do, I've already reinstalled minecraft.
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So awhile ago we got a new antivirus. I hadn't played minecraft in a while, and none of my singleplayer worlds would work, they would load for awhile and then crash. Multiplayer and realms still worked though. However, when i used 1.6.4, the latest version I can run singleplayer on, when i go back to 1.8, multiplayer and realms doesn't work, it doesn't crash, just comes up with an error: java.lang.nullpointerexeption: group. I'm not sure what to do, I've already reinstalled minecraft.