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NBTTagCompound dataCompound = new NBTTagCompound(); ItemStack newStack = new ItemStack(Items.DIAMOND); newStack.writeToNBT(dataCompound); //writes newStack data to dataCompound if(dataCompound.hasKey("id")) { ItemStack fromCompoundStack = new ItemStack(dataCompound); } //if the dataCompound has a ItemStack data, make a new stack from that data.

The tile entity should override the has/getCapability methods appropriately replace everything from IInventory with the tile entities ItemstackHandler You can see an example at https://github.com/Cadiboo/WIPTech/blob/fb5883e9d76ef0361ec1ebbcb9c508611dd2ef6b/src/main/java/cadiboo/wiptech/tileentity/TileEntityModFurnace.java#L300-L340 and https://github.com/Cadiboo/WIPTech/blob/fb5883e9d76ef0361ec1ebbcb9c508611dd2ef6b/src/main/java/cadiboo/wiptech/inventory/ContainerModFurnace.java

Keep in mind that if you are booting with UEFI you will have issues. That said, there's a ppa for the proprietary graphics drivers: https://launchpad.net/~graphics-drivers/+archive/ubuntu/ppa Edit: that should say "... if you are booting with UEFI you will have issues with proprietary drivers due to signature requirements".

Wow! That was it, CUTOUT_MIPPED! I knew it was something trivial! Thanks desht!

No, those overrides should be sufficient. What does your model JSON look like? Also, you should be using CUTOUT_MIPPED for your block render layer (getBlockLayer()). TRANSLUCENT is for blocks like glass or ice.

I believe it needs to be a ResourceLocation instead of just a String e.g., GameRegistry.registerTileEntity(DataTileEntity.class, new ResourceLocation(Reference.MOD_ID + ".data_block"));

This does not stop you from making an issue on their GitHub, which @Cadiboo linked for you.