Minecraft – Why are blocks respawning in the Minecraft 1.3 SMP server

As I mentioned in the other question, this doesn't work correctly at the moment (hopefully he'll fix it in the halloween update).

However, for now there are a few things you can do:

• If you are an admin, you can give yourself water (id# 8) or lava (id# 10) blocks:

  /give username 08 64
  /give username 10 64

• If you own the server, there are mods you can install which fix buckets. I can't get the links for you right now, but I believe the name of the mod is llama-mod.

For a mod to work in multiplayer, the author needs to create a SMP version. The most common way is through bukkit.

However if a mod adds new items, like the two examples you have given, playing SMP with it will require both a server mod and client mod to work together. This usually means the same developer or team needs to make both. If they don't provide both yet add new items, the mod is likely single player only.

For combining several of these mods, they all need to use compatible methods of adding themselves. If one is a bukkit mod while the other is its own mod that conflicts with bukkit you're usually out of luck.