[02:07:59 ERROR]: A TileEntity command_blockTE(com.zabqer.opencb.CommandBlockTileEntityServer) has thrown an exception during loading, its state cannot be restored. Report this to the mod author
java.lang.IllegalArgumentException: Invalid UUID string:
        at java.util.UUID.fromString(UUID.java:194) ~[?:1.8.0_91]
        at com.zabqer.opencb.Placer.fromString(Placer.java:42) ~[Placer.class:?]
        at com.zabqer.opencb.CommandBlockTileEntityProxy.func_145839_a(CommandBlockTileEntityProxy.java:40) ~[CommandBlockTileEntityProxy.class:?]
        at com.zabqer.opencb.CommandBlockTileEntityServer.readFromNBT_OpenComputers(CommandBlockTileEntityServer.java:63) ~[CommandBlockTileEntityServer.class:?]
        at li.cil.oc.common.asm.template.StaticSimpleEnvironment.readFromNBT(StaticSimpleEnvironment.java:74) ~[OpenComputers-MC1.7.10-1.6.2.12-universal.jar:?]
        at com.zabqer.opencb.CommandBlockTileEntityServer.func_145839_a(CommandBlockTileEntityServer.java:52) ~[CommandBlockTileEntityServer.class:?]
        at net.minecraft.tileentity.TileEntity.func_145827_c(TileEntity.java:132) [aor.class:?]
        at net.minecraft.world.chunk.storage.AnvilChunkLoader.loadEntities(AnvilChunkLoader.java:525) [aqk.class:?]
        at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:44) [ChunkIOProvider.class:1.7.10-1614.58]
        at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:15) [ChunkIOProvider.class:1.7.10-1614.58]
        at net.minecraftforge.common.util.AsynchronousExecutor.skipQueue(AsynchronousExecutor.java:344) [AsynchronousExecutor.class:1.7.10-1614.58]
        at net.minecraftforge.common.util.AsynchronousExecutor.getSkipQueue(AsynchronousExecutor.java:302) [AsynchronousExecutor.class:1.7.10-1614.58]
        at net.minecraftforge.common.chunkio.ChunkIOExecutor.syncChunkLoad(ChunkIOExecutor.java:12) [ChunkIOExecutor.class:1.7.10-1614.58]
        at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:212) [ms.class:?]
        at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:185) [ms.class:?]
        at net.minecraft.world.gen.ChunkProviderServer.func_73154_d(ChunkProviderServer.java:323) [ms.class:?]
        at net.minecraft.world.World.func_72964_e(World.java:799) [ahb.class:?]
        at net.minecraft.world.ChunkCache.<init>(ChunkCache.java:39) [ahr.class:?]
        at net.minecraft.world.World.func_72844_a(World.java:4149) [ahb.class:?]
        at net.minecraft.pathfinding.PathNavigate.func_75488_a(PathNavigate.java:88) [vv.class:?]
        at net.minecraft.pathfinding.PathNavigate.func_75492_a(PathNavigate.java:93) [vv.class:?]
        at net.minecraft.entity.ai.EntityAIWander.func_75249_e(SourceFile:41) [vc.class:?]
        at net.minecraft.entity.ai.EntityAITasks.func_75774_a(EntityAITasks.java:111) [uj.class:?]
        at net.minecraft.entity.EntityLiving.func_70619_bc(EntityLiving.java:582) [sw.class:?]
        at net.minecraft.entity.EntityLivingBase.func_70636_d(EntityLivingBase.java:2121) [sv.class:?]
        at net.minecraft.entity.EntityLiving.func_70636_d(EntityLiving.java:388) [sw.class:?]
        at net.minecraft.entity.monster.EntityMob.func_70636_d(EntityMob.java:36) [yg.class:?]
        at net.minecraft.entity.EntityLivingBase.func_70071_h_(EntityLivingBase.java:1954) [sv.class:?]
        at net.minecraft.entity.EntityLiving.func_70071_h_(EntityLiving.java:213) [sw.class:?]
        at net.minecraft.entity.monster.EntityMob.func_70071_h_(EntityMob.java:41) [yg.class:?]
        at net.minecraft.entity.monster.EntityCreeper.func_70071_h_(EntityCreeper.java:155) [xz.class:?]
        at net.minecraft.world.World.func_72866_a(World.java:2740) [ahb.class:?]
        at net.minecraft.world.WorldServer.func_72866_a(WorldServer.java:877) [mt.class:?]
        at net.minecraft.world.World.func_72870_g(World.java:2678) [ahb.class:?]
        at net.minecraft.world.World.func_72939_s(World.java:2480) [ahb.class:?]
        at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:673) [mt.class:?]
        at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:986) [MinecraftServer.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:432) [lt.class:?]
        at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:841) [MinecraftServer.class:?]
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:693) [MinecraftServer.class:?]
        at java.lang.Thread.run(Thread.java:745) [?:1.8.0_91]