We got a bunch of warn messages about EnergyNet.removeTileEntity. We play the following modpack on a cauldron server: https://github.com/BakermanLP/ModpackProjectRETv7
There you see a complete list of mods and config files.

Can you do anything about that?

[13:43:11 WARN]: EnergyNet.removeTileEntity: mekanism.common.tile.TileEntityEliteFactory@53461caf (mekanism.common.tile.TileEntityEliteFactory@53461caf) doesn't match the registered te mekanism.common.tile.TileEntityEliteFactory@5ae32224, skipping
[13:43:11 WARN]: EnergyNet.removeTileEntity: mekanism.common.tile.TileEntityEliteFactory@6c576c4 (mekanism.common.tile.TileEntityEliteFactory@6c576c4) doesn't match the registered te mekanism.common.tile.TileEntityEliteFactory@75d69819, skipping
[13:43:11 WARN]: EnergyNet.removeTileEntity: mekanism.common.tile.TileEntityEliteFactory@37d243b3 (mekanism.common.tile.TileEntityEliteFactory@37d243b3) doesn't match the registered te mekanism.common.tile.TileEntityEliteFactory@5b9bcdbf, skipping
[13:43:11 WARN]: EnergyNet.removeTileEntity: mekanism.common.tile.TileEntityEliteFactory@4d5ab966 (mekanism.common.tile.TileEntityEliteFactory@4d5ab966) doesn't match the registered te mekanism.common.tile.TileEntityEliteFactory@51e0e595, skipping
[13:43:11 WARN]: EnergyNet.removeTileEntity: mekanism.common.tile.TileEntityEliteFactory@342952d0 (mekanism.common.tile.TileEntityEliteFactory@342952d0) doesn't match the registered te mekanism.common.tile.TileEntityEliteFactory@400c332, skipping
[13:43:12 WARN]: EnergyNet.addTileEntity: mekanism.common.tile.TileEntityEliteFactory@b206062 (mekanism.common.tile.TileEntityEliteFactory@b206062) is still conflicting with mekanism.common.tile.TileEntityEliteFactory@5b9bcdbf using the same position (overlapping), aborting
[13:43:12 WARN]: EnergyNet.addTileEntity: mekanism.common.tile.TileEntityEliteFactory@51bfdc6c (mekanism.common.tile.TileEntityEliteFactory@51bfdc6c) is still conflicting with mekanism.common.tile.TileEntityEliteFactory@75d69819 using the same position (overlapping), aborting
[13:43:12 WARN]: EnergyNet.addTileEntity: mekanism.common.tile.TileEntityEliteFactory@2b39b8f (mekanism.common.tile.TileEntityEliteFactory@2b39b8f) is still conflicting with mekanism.common.tile.TileEntityEliteFactory@400c332 using the same position (overlapping), aborting
[13:43:12 WARN]: EnergyNet.addTileEntity: mekanism.common.tile.TileEntityEliteFactory@d28508b (mekanism.common.tile.TileEntityEliteFactory@d28508b) is still conflicting with mekanism.common.tile.TileEntityEliteFactory@5ae32224 using the same position (overlapping), aborting
[13:43:12 WARN]: EnergyNet.addTileEntity: mekanism.common.tile.TileEntityEliteFactory@7a97c7a2 (mekanism.common.tile.TileEntityEliteFactory@7a97c7a2) is still conflicting with mekanism.common.tile.TileEntityEliteFactory@51e0e595 using the same position (overlapping), aborting
[13:43:41 WARN]: EnergyNet.removeTileEntity: mekanism.common.tile.TileEntityEliteFactory@d28508b (mekanism.common.tile.TileEntityEliteFactory@d28508b) doesn't match the registered te mekanism.common.tile.TileEntityEliteFactory@5ae32224, skipping
[13:43:41 WARN]: EnergyNet.removeTileEntity: mekanism.common.tile.TileEntityEliteFactory@51bfdc6c (mekanism.common.tile.TileEntityEliteFactory@51bfdc6c) doesn't match the registered te mekanism.common.tile.TileEntityEliteFactory@75d69819, skipping
[13:43:41 WARN]: EnergyNet.removeTileEntity: mekanism.common.tile.TileEntityEliteFactory@b206062 (mekanism.common.tile.TileEntityEliteFactory@b206062) doesn't match the registered te mekanism.common.tile.TileEntityEliteFactory@5b9bcdbf, skipping
[13:43:41 WARN]: EnergyNet.removeTileEntity: mekanism.common.tile.TileEntityEliteFactory@7a97c7a2 (mekanism.common.tile.TileEntityEliteFactory@7a97c7a2) doesn't match the registered te mekanism.common.tile.TileEntityEliteFactory@51e0e595, skipping
[13:43:41 WARN]: EnergyNet.removeTileEntity: mekanism.common.tile.TileEntityEliteFactory@2b39b8f (mekanism.common.tile.TileEntityEliteFactory@2b39b8f) doesn't match the registered te mekanism.common.tile.TileEntityEliteFactory@400c332, skipping
[13:43:41 WARN]: EnergyNet.addTileEntity: mekanism.common.tile.TileEntityEliteFactory@49e39367 (mekanism.common.tile.TileEntityEliteFactory@49e39367) is still conflicting with mekanism.common.tile.TileEntityEliteFactory@51e0e595 using the same position (overlapping), aborting
[13:43:41 WARN]: EnergyNet.addTileEntity: mekanism.common.tile.TileEntityEliteFactory@7be27516 (mekanism.common.tile.TileEntityEliteFactory@7be27516) is still conflicting with mekanism.common.tile.TileEntityEliteFactory@400c332 using the same position (overlapping), aborting
[13:43:41 WARN]: EnergyNet.addTileEntity: mekanism.common.tile.TileEntityEliteFactory@37057f39 (mekanism.common.tile.TileEntityEliteFactory@37057f39) is still conflicting with mekanism.common.tile.TileEntityEliteFactory@5b9bcdbf using the same position (overlapping), aborting
[13:43:41 WARN]: EnergyNet.addTileEntity: mekanism.common.tile.TileEntityEliteFactory@57b33792 (mekanism.common.tile.TileEntityEliteFactory@57b33792) is still conflicting with mekanism.common.tile.TileEntityEliteFactory@75d69819 using the same position (overlapping), aborting
[13:43:41 WARN]: EnergyNet.addTileEntity: mekanism.common.tile.TileEntityEliteFactory@2d616ed4 (mekanism.common.tile.TileEntityEliteFactory@2d616ed4) is still conflicting with mekanism.common.tile.TileEntityEliteFactory@5ae32224 using the same position (overlapping), aborting
[13:44:11 WARN]: EnergyNet.removeTileEntity: mekanism.common.tile.TileEntityEliteFactory@2d616ed4 (mekanism.common.tile.TileEntityEliteFactory@2d616ed4) doesn't match the registered te mekanism.common.tile.TileEntityEliteFactory@5ae32224, skipping
[13:44:11 WARN]: EnergyNet.removeTileEntity: mekanism.common.tile.TileEntityEliteFactory@57b33792 (mekanism.common.tile.TileEntityEliteFactory@57b33792) doesn't match the registered te mekanism.common.tile.TileEntityEliteFactory@75d69819, skipping
[13:44:11 WARN]: EnergyNet.removeTileEntity: mekanism.common.tile.TileEntityEliteFactory@37057f39 (mekanism.common.tile.TileEntityEliteFactory@37057f39) doesn't match the registered te mekanism.common.tile.TileEntityEliteFactory@5b9bcdbf, skipping
[13:44:11 WARN]: EnergyNet.removeTileEntity: mekanism.common.tile.TileEntityEliteFactory@49e39367 (mekanism.common.tile.TileEntityEliteFactory@49e39367) doesn't match the registered te mekanism.common.tile.TileEntityEliteFactory@51e0e595, skipping
[13:44:11 WARN]: EnergyNet.removeTileEntity: mekanism.common.tile.TileEntityEliteFactory@7be27516 (mekanism.common.tile.TileEntityEliteFactory@7be27516) doesn't match the registered te mekanism.common.tile.TileEntityEliteFactory@400c332, skipping
[13:44:13 WARN]: EnergyNet.addTileEntity: mekanism.common.tile.TileEntityEliteFactory@57460d44 (mekanism.common.tile.TileEntityEliteFactory@57460d44) is still conflicting with mekanism.common.tile.TileEntityEliteFactory@5b9bcdbf using the same position (overlapping), aborting
[13:44:13 WARN]: EnergyNet.addTileEntity: mekanism.common.tile.TileEntityEliteFactory@6a46b7fa (mekanism.common.tile.TileEntityEliteFactory@6a46b7fa) is still conflicting with mekanism.common.tile.TileEntityEliteFactory@400c332 using the same position (overlapping), aborting
[13:44:13 WARN]: EnergyNet.addTileEntity: mekanism.common.tile.TileEntityEliteFactory@1f7216a7 (mekanism.common.tile.TileEntityEliteFactory@1f7216a7) is still conflicting with mekanism.common.tile.TileEntityEliteFactory@5ae32224 using the same position (overlapping), aborting
[13:44:13 WARN]: EnergyNet.addTileEntity: mekanism.common.tile.TileEntityEliteFactory@3811181f (mekanism.common.tile.TileEntityEliteFactory@3811181f) is still conflicting with mekanism.common.tile.TileEntityEliteFactory@51e0e595 using the same position (overlapping), aborting
[13:44:13 WARN]: EnergyNet.addTileEntity: mekanism.common.tile.TileEntityEliteFactory@7b2d3e11 (mekanism.common.tile.TileEntityEliteFactory@7b2d3e11) is still conflicting with mekanism.common.tile.TileEntityEliteFactory@75d69819 using the same position (overlapping), aborting

It's a chunk-thrashing issue. It's really hard to even track down which mod they originate from, let alone fix them. See #1820 for any progress we make on tracking it down.