Pressure plates produce redstone signals when stood on. Wooden pressure plates also produce signals when items are dropped on them. Placing these next to doors will open the door, while placing next to redstone lamps will power them, and placing next to redstone dust will power it. Pressure plates will stay active for one second after stepping off the plate.
how does a preassure vessel work
You need Java.
you need to be in multi-player or a server to make the TNT work.
Sometime you have to press fn to make it work.
Make sure you port forwarded it correctly.
it doesn't work with buttons. you can put a pressure plate, redstone torch, or a lever right next to the dispenser
Work it out yourself.
The mod developer will need to update the mod to be compatible with the new Minecraft version.
Unless you work for Mojang, I don't think you can make an update. But, what you could make is a Mod.
First Make sure you closed minecraft COMPLETELY then install the skin (re install) It should work correctly if not you don't have a premium account
Beds were not introduced into Minecraft until Beta 1.3, so no.
Minecraft 1.4.6 mods will work with 1.4.7 sense they are both a 1.4.