FTB crashed after entering to mystcraft world

[Absent]

Hello. Firstly I'm gona say don't judge my because of my english I' m from Lithuania.
I was playing Feed the beast on Ultimate modpack, and then I want to enter to mystcraft world where I already been and while entering that age FTB crashed and now I can't go in to my world it crashes every time when I try to log in. I tryed to disable Mystcraft, deleting ages, with MCedit change spawn point, change player location nothing helped what should I do to fix that? Thats what crash report shows

---- Minecraft Crash Report ----
// I'm sorry, Dave.

Time: 13.6.5 17.11
Description: Exception in server tick loop

java.lang.IllegalArgumentException: Empty string not allowed
at cc.<init>(SourceFile:15)
at bq.a(SourceFile:77)
at com.xcompwiz.mystcraft.generation.AgeData.b(AgeData.java:308)
at com.xcompwiz.mystcraft.network.MPacketAgeData.getDataPacket(MPacketAgeData.java:53)
at com.xcompwiz.mystcraft.network.NetworkHelper.sendAgeData(NetworkHelper.java:120)
at com.xcompwiz.mystcraft.network.MystcraftConnectionHandler.playerLoggedIn(MystcraftConnectionHandler.java:23)
at cpw.mods.fml.common.network.NetworkRegistry.playerLoggedIn(NetworkRegistry.java:161)
at cpw.mods.fml.common.network.FMLNetworkHandler.handlePlayerLogin(FMLNetworkHandler.java:281)
at gm.a(ServerConfigurationManager.java:143)
at bec.b(IntegratedServerListenThread.java:96)
at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:703)
at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:599)
at bdz.q(IntegratedServer.java:123)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:497)
at fy.run(SourceFile:849)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- System Details --
Details:
Minecraft Version: 1.4.7
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.7.0_21, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 217209696 bytes (207 MB) / 690647040 bytes (658 MB) up to 1046937600 bytes (998 MB)
Mod Pack: CWW256 forgot to change this.
LiteLoader Mods: 4 loaded mod(s)
- VoxelPacket version 2.0.2
- VoxelPlayer version 0.9.6
- VoxelMenu version 1.4.7_05
- VoxelMap version 1.0.0
JVM Flags: 7 total; -Xms256M -Xmx1024M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:+AggressiveOpts -XX:+CMSClassUnloadingEnabled -XX:MaxPermSize=128m
AABB Pool Size: 6695 (374920 bytes; 0 MB) allocated, 6695 (374920 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 7, tcache: 41, allocated: 1, tallocated: 16

 

[egor66]

its a random crash its has been a minor problem with mystcraft off & on from the start, as long as it not on each port you can live with it, if its a new world & for some strange reason got corrupted you can delete the file Dim(number here) from inside your save folder & it will regen, first will be Dim2 then Dim3 & so on, unless the format has changed in last update, do not delete Dim7 thats TF.