And update released, try this and see if it works? I’m really curious what other stuff you’re running that corrupted the MinecraftServer.class file that much… That’s crazy…
This Version should probably be working for you. ^^
(note 1: The scary sounding Description is only there to make sure people don’t use that Version lightly.)
(note 2: if you use this Version more often, make sure your Browser didn’t cache the Download)