Convert from Unleashed to Monster?

[ScavengerrX]

So, i tried to convert my save from Unleashed to Monster. And i figured out how to do it... Kind of... But the game crashes everytime I'm anyway near my buildings and stuff for too long. I have no idea how to fix this, if it's even possible... But here's the crash report. Hope someone can take a look at it.

http://pastebin.com/SK5GcUac

 

[UniZero]

I would suggest creating a new world. The FTB people have said that it would not be possible to convert saves over.

 

[ScavengerrX]

I somehow figured out to convert without any crashing

 

[nikohal]

I try convert my old world but my minecraft crash when I login to game. Here is my server side log.

20:32:33 [INFO] Loading Player: nikohal
20:32:33 [INFO] Sending serverside check to: nikohal
20:32:33 [INFO] aci$1 | net.minecraft.world.SpawnerAnimals$1
20:32:33 [INFO] mi | net.minecraft.util.WeightedRandom
20:32:33 [INFO] r | net.minecraft.util.Direction
20:32:33 [INFO] el$1 | net.minecraft.network.packet.Packet56MapChunks$1
20:32:33 [INFO] ek | net.minecraft.network.packet.Packet51MapChunkData
20:32:33 [INFO] acn | net.minecraft.block.BlockEventData
20:32:33 [INFO] nx | net.minecraft.command.EntitySelectorAlive
20:32:33 [INFO] ny | net.minecraft.command.EntitySelectorInventory
20:32:33 [INFO] mz | net.minecraft.util.CombatEntry
20:32:33 [INFO] tu | net.minecraft.entity.SpiderEffectsGroupData
20:32:33 [INFO] oi | net.minecraft.entity.EntityLivingData
20:32:34 [INFO] [2.0.1] Recieved client info from nikohal
20:32:34 [INFO] ato | net.minecraft.scoreboard.ScoreObjectiveCriteria
20:32:34 [INFO] atm | net.minecraft.scoreboard.ScoreDummyCriteria
20:32:34 [INFO] atn | net.minecraft.scoreboard.ScoreHealthCriteria
20:32:34 [INFO] ty | net.minecraft.entity.monster.EntityZombieGroupData
20:32:34 [INFO] aqz$1 | net.minecraft.block.Block$1
20:32:42 [INFO] Connection reset
20:32:42 [INFO] nikohal lost connection: disconnect.endOfStream
20:32:42 [INFO] Unloading Player: nikohal
20:32:42 [INFO] ºenikohal left the game.

And here is my game crash report: http://pastebin.com/D1eT6Sgp
Anybody is here how can help me?

Regards, Niko H.