Version 1.5.4.54

Activated a giant chance cube with a silk touch hammer from tinkers construct. We got a block piece back. We put the block piece down, and broken it with a pickaxe from tinkers construct (without silk touch), and the server crashed.

Updating to 1.6.2 should fix this crash

(SECOND CRASH - was a giant chance cube from NEI - grabbed in cheat mode - used pickaxe.)
java.lang.NoClassDefFoundError: org/lwjgl/util/vector/Vector3f
at chanceCubes.rewards.biodomeGen.BasicTreesBiome.genDome(BasicTreesBiome.java:35)
at chanceCubes.rewards.giantRewards.BioDomeReward.trigger(BioDomeReward.java:30)
at chanceCubes.registry.GiantCubeRegistry.triggerRandomReward(GiantCubeRegistry.java:88)
at chanceCubes.blocks.BlockGiantCube.removedByPlayer(BlockGiantCube.java:66)
at net.minecraft.server.management.ItemInWorldManager.removeBlock(ItemInWorldManager.java:247)
at net.minecraft.server.management.ItemInWorldManager.func_73084_b(ItemInWorldManager.java:296)
at net.minecraft.server.management.ItemInWorldManager.func_73082_a(ItemInWorldManager.java:217)