Java Edition 13w18c

13w18c is the sixth snapshot for Java Edition 1.6.1, which was released to fix some of the bugs and crashes in the 13w18a and 13w18b snapshots.

Blocks

 * Block of coal
 * Smelting time was changed from 720 to 800 seconds.
 * Smelts 80 items, the same number of items that 10 coal can smelt

Fixes
7 bugs fixed

From the 1.6.1 snapshots
 * – Enchanted books don't show what tab it is in.
 * – Skins not loading for players.
 * – Breaking Item Frames causes a null pointer exception and crash.
 * – Internal exception: java.lang.NullPointerException.

From the previous snapshot
 * – Wrong particle texture when changing texture packs in-game.
 * – Coal blocks and note blocks do not show up in creative tabs.
 * – Game crashes on startup.