http://pastebin.com/zJ0Mt2ii
Hi guys,
The entire server suddenly crashed and it happened for apparently no reason, I was flyng around with a chisel block in the hand and some other stuff, maybe it was caused by some low pressure boiler tank chunk-loaded somewhere in dimension 0 (overworld).
I was in a RFtool dimension when the crash occurred and I was building some salination tower (mekanism) that may explain the "mekanism" part in the crash log but there was no fluid present at the moment.. it was all dry, that's the real strange thing...

In your opinion I have to post it also at Mekanism owner?

Duplicate of #451

Sometimes the game gets TileEntities mixed up, you must always do an instanceof check before casting TileEntities. This is nothing I can fix from my end.

an istanceof check before cast TileEntities"? what do you mean exactly?how do I do that?
sorry for my ignorance °-°

You don't. You report this to Mekanism.