Converting a Tekkit Classic server to a Yogcraft server

[DaFuriousBadger]

I ran a private Tekkit server with my brother but Tekkit has gotten boring and we want to delve into the features of Thaumcraft and Forestry so we decided to switch to Yogcraft. So, I tried placing the map from the Tekkit server into the Yogcraft one. It started up fine. However, whenever someone joins, the server spits out an error and shuts down as if someone had typed the command "stop" into the console. Here is the error it gives me:


[INFO] Starting minecraft server version 1.4.7
[INFO] Loading properties
[INFO] Default game type: SURVIVAL
[INFO] Generating keypair
[INFO] Starting Minecraft server on *:25565
[INFO] Preparing level "world"
[INFO] Preparing start region for level 0
[INFO] Done (1.082s)! For help, type "help" or "?"
[INFO] User DaFuriousBadger connecting with mods [ThermalExpansion, RedPowerWiring, BuildCraft|Silicon, ThermalExpansion|Transport, BuildCraft|Transport, TwilightForest, IC2NuclearControl, BuildCraft|Core, ThermalExpansion|Factory, RedPowerCompat, WR-CBE|Core, RedPowerLogic, IC2, ThermalExpansion|Energy, ExtraBees, Thaumcraft, StevesCarts, WR-CBE|RedPower, Forestry, EnderStorage, WR-CBE|Addons, ComputerCraft, GraviGun, BinnieCore, AdvancedMachines, mmmPowersuits, BuildCraft|Factory, RedPowerMachine, IronChest, XReliquary, BuildCraft|Energy, SoulShards, Railcraft, RedPowerCore, EE3, MiscPeripherals, PortalGun, ChickenChunks, CCTurtle, ModularForceFieldSystem, RedPowerControl, RedPowerLighting, RedPowerBase, RedPowerWorld, BuildCraft|Builders, PowerConverters]
[INFO] DaFuriousBadger logged in with entity id 859 at (-648.24052407912, 78.0, 252.00400804147984)
[SEVERE] Encountered an unexpected exception NoClassDefFoundError
java.lang.NoClassDefFoundError: l
at a.<init>(CrashReport.java:27)
at a.a(CrashReport.java:319)
at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:673)
at ho.r(DedicatedServer.java:269)
at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:599)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:497)
at fy.run(SourceFile:849)
[INFO] Stopping server
[INFO] Saving players
[INFO] Saving worlds
[INFO] Saving chunks for level 'world'/Overworld
[INFO] Saving chunks for level 'world'/Nether
Any ideas on what might be causing this?

 

[TechnifiedGuy]

If you watch the yogscast yogcraft series(particulary Duncan's), you'll notice that he says they had to convert world(alter data values) to solve the compatibility prob(which is probably the problem you're facing. You may have to destroy the blocks w/ the same data values as ftb in tekkit(like ee2,buildcraft addon pipes,etc.). I suggest copying as much as you can from your original world to your yogcraft, because data values are quite the hassle to change to me. Or you could do what I did, which is to sadly start over until a fix can be made.