Blocks in pipes disapears

[Raekon]

Title: Blocks in pipes disapears

Version: 3.1.2

OS: Windows 7

Java Version: Java 7

Description of Problem:

Hello!

Started my own local hosted tekkit server a while ago now with some friend. Everything worked perfectly until some days ago.

I've started a new world, got everything setup inside the world. Pipes, quarrys, base, all that stuff. But when i was looking at the pipes from the quarry i saw that many blocks just disapeared.

Is there a way to fix it?

Thanks.

Error Messages:

Error Log:

[Hunt of Doom]

Are they actually disappearing or are they visually disappearing, i.e the items still go in the chest, but are visually disappearing in the pipes.

[Raekon]

Are they actually disappearing or are they visually disappearing, i.e the items still go in the chest, but are visually disappearing in the pipes.

Both. Was overviewing one of the pipes to see if anything got but it didnt.

But sometime's the items goes to the chest but cant be seen in the pipes.