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Lately, I've started seeing this a lot in my Minecraft server log:

Attempted to place a tile entity where there was no entity tile!

Sometimes I see it a lot, sometimes not at all.

What does it mean?

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up vote 4 down vote accepted

Internally, the game refers to blocks as "tiles" and non-blocks (mobs, dropped items, minecarts, etc.) as "entities". Some blocks need extra information associated with them (chests have inventories, furnaces have cook times, …) which are stored as invisible entities called "tile entities". The blocks which have entities associated with them are then "entity tiles". (These are all debug terms; the average player shouldn't ever have to worry about them.)

An error message occurs when, during a chunk load, a tile entity is found, but it's matching entity file isn't. In this case, the entity was one which can contain items (such as a chest, furnace, or dispenser). This can happen because:

  • the chunk's data was corrupted
  • an installed mod was incorrectly written or has been uninstalled
  • good old game bugs (go beta!)

The game is good about recovering from such things — the orphaned tile entity is simply discarded and the chunk continues loading — but it does mean something has gone wrong.

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Wow. I really was way off! –  John the Green Oct 26 '11 at 13:24
    
Could it have anything to do with the minecart that I have infinitely looping over a piece of rail? –  John the Green Oct 26 '11 at 13:25
    
@John — Don't feel too bad about being off — the words we as players use aren't the same as the ones Notch uses in his code (hence BlockContainer instead of, say, TileWithInventory or some such). –  Ben Blank Oct 26 '11 at 14:51
    
@John — It shouldn't be a proper entity (like a minecart) that causes it, but a complex block/tile like a furnace, dispenser, etc. If you're modding or have modded in the past, that would be my first guess (I've caused this error for myself in the past while modding). If you're running a prerelease, those are especially buggy. Other than that? No real way to make a good guess; the error doesn't even tell you where in the world the problem occurred. :-/ –  Ben Blank Oct 26 '11 at 14:52
    
Hmm, well I guess I won't worry about it seeing as it's a 100% vanilla 1.8.1 (no prereleases) server. Do pistons have tile entities? My minecart repeatedly opens and closes a piston. Could something like this happen if the minecart changes the state of the piston before the piston loads? –  John the Green Oct 26 '11 at 15:13
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