Program: 27614
Project: 27614
Buggy source:
@Overwrite public WorldInfo loadWorldInfo(){
  File file1=new File(this.worldDirectory,"String_Node_Str");
  File file2=new File(this.worldDirectory,"String_Node_Str");
  File spongeFile=new File(this.worldDirectory,"String_Node_Str");
  File spongeOldFile=new File(this.worldDirectory,"String_Node_Str");
  NBTTagCompound nbttagcompound;
  NBTTagCompound nbttagcompound1;
  WorldInfo worldInfo=null;
  if (!file1.exists() && file2.exists()) {
    net.minecraftforge.fml.common.FMLCommonHandler.instance().confirmBackupLevelDatUse((SaveHandler)(Object)this);
  }
  if (file1.exists() || file2.exists()) {
    try {
      nbttagcompound=CompressedStreamTools.readCompressed(new FileInputStream(file1.exists() ? file1 : file2));
      nbttagcompound1=nbttagcompound.getCompoundTag("String_Node_Str");
      worldInfo=new WorldInfo(nbttagcompound1);
      if (DimensionManager.getCurrentSaveRootDirectory().equals(this.worldDirectory)) {
        net.minecraftforge.fml.common.FMLCommonHandler.instance().handleWorldDataLoad((SaveHandler)(Object)this,worldInfo,nbttagcompound);
      }
      if (spongeFile.exists() || spongeOldFile.exists()) {
        nbttagcompound=CompressedStreamTools.readCompressed(new FileInputStream(spongeFile.exists() ? spongeFile : spongeOldFile));
        ((IMixinWorldInfo)worldInfo).setSpongeRootLevelNBT(nbttagcompound);
        if (nbttagcompound.hasKey(SpongeMod.instance.getModId())) {
          NBTTagCompound spongeNbt=nbttagcompound.getCompoundTag(SpongeMod.instance.getModId());
          ((IMixinWorldInfo)worldInfo).readSpongeNbt(spongeNbt);
        }
      }
      return worldInfo;
    }
 catch (    net.minecraftforge.fml.common.StartupQuery.AbortedException e) {
      throw e;
    }
catch (    Exception exception1) {
      exception1.printStackTrace();
    }
  }
  return null;
}

Fixed version (ground truth):
@Overwrite public WorldInfo loadWorldInfo(){
  File file1=new File(this.worldDirectory,"String_Node_Str");
  File file2=new File(this.worldDirectory,"String_Node_Str");
  File spongeFile=new File(this.worldDirectory,"String_Node_Str");
  File spongeOldFile=new File(this.worldDirectory,"String_Node_Str");
  NBTTagCompound nbttagcompound;
  NBTTagCompound nbttagcompound1;
  WorldInfo worldInfo=null;
  if (!file1.exists() && file2.exists()) {
    net.minecraftforge.fml.common.FMLCommonHandler.instance().confirmBackupLevelDatUse((SaveHandler)(Object)this);
  }
  if (file1.exists() || file2.exists()) {
    try {
      nbttagcompound=CompressedStreamTools.readCompressed(new FileInputStream(file1.exists() ? file1 : file2));
      nbttagcompound1=nbttagcompound.getCompoundTag("String_Node_Str");
      worldInfo=new WorldInfo(nbttagcompound1);
      if (this.worldDirectory.getParentFile() == null || (FMLCommonHandler.instance().getSide() == Side.CLIENT && this.worldDirectory.getParentFile().equals(FMLCommonHandler.instance().getSavesDirectory()))) {
        net.minecraftforge.fml.common.FMLCommonHandler.instance().handleWorldDataLoad((SaveHandler)(Object)this,worldInfo,nbttagcompound);
      }
      if (spongeFile.exists() || spongeOldFile.exists()) {
        nbttagcompound=CompressedStreamTools.readCompressed(new FileInputStream(spongeFile.exists() ? spongeFile : spongeOldFile));
        ((IMixinWorldInfo)worldInfo).setSpongeRootLevelNBT(nbttagcompound);
        if (nbttagcompound.hasKey(SpongeMod.instance.getModId())) {
          NBTTagCompound spongeNbt=nbttagcompound.getCompoundTag(SpongeMod.instance.getModId());
          ((IMixinWorldInfo)worldInfo).readSpongeNbt(spongeNbt);
        }
      }
      return worldInfo;
    }
 catch (    net.minecraftforge.fml.common.StartupQuery.AbortedException e) {
      throw e;
    }
catch (    Exception exception1) {
      exception1.printStackTrace();
    }
  }
  return null;
}