When you change the preset into indev and go into the create a new world menu, the gui won't load and the folowing exception is printed in the console :
[08:58:37] java.lang.reflect.InvocationTargetException
[08:58:37] at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)
[08:58:37] at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeC
onstructorAccessorImpl.java:62)
[08:58:37] at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Del
egatingConstructorAccessorImpl.java:45)
[08:58:37] at java.lang.reflect.Constructor.newInstance(Constructor.java:40
8)
[08:58:37] at net.minecraft.src.GuiSelectWorld.actionPerformed(GuiSelectWor
ld.java:197)
[08:58:37] at net.minecraft.src.GuiScreen.mouseClicked(GuiScreen.java:169)
[08:58:37] at net.minecraft.src.GuiScreen.handleMouseInput(GuiScreen.java:2
60)
[08:58:37] at net.minecraft.src.GuiScreen.handleInput(GuiScreen.java:232)
[08:58:37] at net.minecraft.src.Minecraft.runTick(Minecraft.java:1559)
[08:58:37] at net.minecraft.src.Minecraft.runGameLoop(Minecraft.java:861)
[08:58:37] at net.minecraft.src.Minecraft.run(Minecraft.java:794)
[08:58:37] at net.minecraft.client.main.Main.main(Main.java:92)
[08:58:37] at Start.main(Start.java:11)
[08:58:37] Caused by: java.lang.NullPointerException
[08:58:37] at net.minecraft.src.nbxlite.gui.PageFinite.applySettings(PageFi
nite.java:216)
[08:58:37] at net.minecraft.src.nbxlite.gui.GuiNBXlite.applySettings(GuiNBX
lite.java:194)
[08:58:37] at net.minecraft.src.nbxlite.gui.GuiNBXlite.(GuiNBXlite.ja
va:27)
[08:58:37] at net.minecraft.src.nbxlite.gui.GuiCreateWorld2.(GuiCreat
eWorld2.java:93)
[08:58:37] ... 13 more
When you change the preset into indev and go into the create a new world menu, the gui won't load and the folowing exception is printed in the console :