Yeah! I am, its when you create a dynamic tank(Mekanism) successfully. For some reason when you load back it replays as if your creating the tank again, it really needs to be removed it was funny once. But not anymore.
This is possable via a mod called ForgeEssentials. But its not been updated for 1.5.2 yet. You will have to wait, when it comes out you can use the /home set command.
The done message is more to do with world loading, most times, that message means a success load, the other things after it is what happens after the loading.
You need to follow the value rule with liquiducts, make sure that there pipe has been hit with a wrench and has a redstone sig like a lever.
You place on the same level as the tank.