Bukkit

Because some people seem to have problems using DeathCube I will introduce you in the use of DC here:

Before you can start you need the permissions of course. We have three groups of permissions for three groups of users:
Players, moderators and admins. Operators always have admin rights ofc.

To create a cube on your server you need three things: A location for the cube (two corners like WorldEdit), a spawn location and the blockbar:

1. Location:
Your cube can have any size you want, just make sure the edges are even. Go to the first corner, write /dcc 1 and then go to the oppsite corner and write /dcc 2 . The location is now set and already saved to the config file. You can change this size anytime

2. Spawn:
If players get teleported out of the cube, die or use the "/cube out" command they will be teleported to the spawn location. You can set the spawn location by using /dcc spawn. This will save your current position and also your looking direction.

3. Block-Bar
The block-bar saves the substances of your cube. Take a look at the picture on the main page to understand the principle.
To create the block-bar use /dcc bar. This command will create the bar along your facing direction but only if there is enough free space to place it. The glas marks the origin, from there you set the border (/dcc) for the construction. The block on top of the glas represents the lobby/tunnel-floor and next to it (above the border-set) you define the blocks which are used for the cube (/dc new). You can use up to 20 blocks and the plugin will stop reading in the particular bar if an air-block is found.
The block-bar will be read if the plugin loads the config, so if you changed the blocks use "/dc reload" first to enforce a reload.

/dcc and /dc new
Some people still don't understand the difference between this commands, so I will explain it to you:
dcc prepares the region for the deathcube. That means that it will remove all blocks vertically, create a bedrock "cage" with lava in it on the bottom, create a border out of whatever and a border of stone around it (to prevent wool from being affected by lava).
Usually you do this command just one time, because it's not the command to renew the cube but to prepare the space for the cube.

The "/dc new" command generates only the cube and the lobby-tunnel. After running /dcc, /dc new is invoked automatically.
If you changed the blocks for the cube just use /dc new also if you did any changes to the options.

Only use /dcc if you changed blocks in the block-bar.

If you have others questions write a comment below and I will answer them.
If you like to correct my bad english feel free to send me a revised version :P