BuildCraft version: buildcraft-7.99.14
Forge version: 14.23.1.2601
Link to crash report or log: https://pastebin.com/KsM7QZdq
Singleplayer or multiplayer: SMP
Additional information: Not 100% what happened here as I'm a server admin and not the player in question. Hope it helps from the crash report

It looks like something unexpected happened while extracting the item from something. For some reason that method doesn't log nearly as much as it should.

looks like a race or corrupt TE state to me, [1xtile.air@0, 2147483647xtile.immersiveengineering.stone_decoration@3] indicates the block was set to air (probably broken) but the TE has not been removed from the world for some reason?

but even then it's weird that it first supllied a stack during simulation and not for actual extraction as nothing else could have ticked

pinging @BluSunrize to see if he has an idea

No, no, it's nothing todo with TE state.

That string is an array of all the blocks (EDIT: items) in an item holder.

(1xtile.air@0 is the string returned by ItemStack.EMPTY.toString())

oh that makes sense, my bad

I have asked the player in question and he said

1:52 PM] rich9517: had tow pipes extracting from a storage draw
[1:52 PM] rich9517: i think there may have been only one item left in the draw

did he have his drawer locked by any chanse?

It wasn't locked it did however have a creative upgrade

@cauliflower69

1. Was the extraction from a drawer, drawer slave or drawer controller? If it was a drawer, what kind of drawer was it, as specific as possible. Basic storage, 2x2, 1x2, compacting, etc?
2. What kind of pipe was it?
3. The creative upgrade, was it a creative storage upgrade (unlimited storage) or a creative vending upgrade (unlimited item withdrawal)?

Testing to try to replicate so we can fix.

i'm gona have to close this for not being reproducable and missing info