java.lang.IllegalStateException: No renderer registered for mooblooms:dandelion_moobloom
at net.minecraft.class_898.(class_898.java:199)
at net.minecraft.class_310.(class_310.java:485)
at net.minecraft.client.main.Main.main(Main.java:164)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

Seems the same as #4 , close this one as the other has the full report