1.6.4 code.

java.lang.NullPointerException
at mca.client.gui.GuiInteractionVillagerChild.func_73863_a(GuiInteractionVillagerChild.java:122)
at net.minecraft.client.renderer.EntityRenderer.func_78480_b(EntityRenderer.java:1036)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:945)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:837)
at net.minecraft.client.main.Main.main(SourceFile:101)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:131)
at net.minecraft.launchwrapper.Launch.main(Launch.java:27)

I have the same problem.

hej bamaboy, me and my boyfreind was playing MCA. And we think your mod is GREAT! i have done it for almost a year. but to the case at that time we didnt know we could get a child together by using the chat. then we both got married to some villagers and got us some kids, but when i tryed to click at his child i crash (same thing happens to him just with my kid) sorry for bad english im am not english or american