In my server.properties file, I have the difficulty set to 1 (easy) and spawn-monsters set to false. The server gamemode is creative. Normally, this allows players to use mob eggs to spawn monsters (and even monster eggs inside dispensers), but does not allow monsters to spawn on their own. That way, players can spawn mobs for fun but don't need to worry about creepers spawning in the night and blowing up their creations. But ever since CraftBukkit 1.2.5 R-2.0 (and now 3.0), users can not spawn mobs at all. Monster mob eggs work if I turn on spawn-monsters in the properties file, but that also causes monsters to spawn on their own at night, which I do not want. tl;dr: My settings worked fined with craftbukkit 1.2.5 R-1.0, but now after updating monster mob eggs do not work.
