I have what strikes me as a problem that I'm sure has a simple fix; I just can't find that fix. I have a small friends-only server and when I place spawners into my dungeons, they don't do anything. They don't produce monsters. They don't even spin. They just sit there, starting at me. I have Worldguard/WorldEdit, Treasurechest, and a permissions plugin. I've been through config files and don't see anything obvious to me that would allow or disallow spawners to operate. The world does product monsters when it normally would (darkness, etc.). So, what am I doing wrong?