Bukkit

What steps will reproduce the problem?
1.creating/recreating a dungeon
2. Starting a new dungeon or using the command to spawn monsters
3. No monsters spawn

What is the expected output? What do you see instead?
I expect to see mobs - nothing.,

What version of the product are you using?
The latest for r6

Do you have an error log of what happened?
Nothing relevant in the output

Please provide any additional information below.
Im a fan of this plugin. My server largely revolves around it so we'd like a fix ASAP

thanks!