Tried with recommended and latest.

 

If I open the file I downloaded, cmd opens a split second and says: Could not find or load main class

If I extract it and run the .java, nothing happens.

 

Using Java 64Bit. Help please, new to the 1.6 installation.

 

 

Nevermind! All fixed! Sorry about that.

How did you fix? I'm having the same problem 

Nevermind! All fixed! Sorry about that.

 

How did you solve this?  I've been getting this from NetBeans a lot / consistently (still can't figure out how to get this to work with Eclipse, though it's claimed to be easier, I don't know what directory to use and keep seeing an empty project).

 

EDIT: I was getting that, now I get this:

 

run:
Exception in thread "main" java.lang.ExceptionInInitializerError
at sun.misc.Unsafe.ensureClassInitialized(Native Method)
at sun.reflect.UnsafeFieldAccessorFactory.newFieldAccessor(UnsafeFieldAccessorFactory.java:43)
at sun.reflect.ReflectionFactory.newFieldAccessor(ReflectionFactory.java:140)
at java.lang.reflect.Field.acquireFieldAccessor(Field.java:949)
at java.lang.reflect.Field.getFieldAccessor(Field.java:930)
at java.lang.reflect.Field.set(Field.java:680)
at Start.main(Start.java:19)
Caused by: java.lang.RuntimeException: Uncompilable source code - package com.google.common.collect does not exist
at net.minecraft.client.Minecraft.<clinit>(Minecraft.java:124)
... 7 more
Java Result: 1
BUILD SUCCESSFUL (total time: 0 seconds)

 

Earlier it would start, show the forge "Setting up your Minecraft environment" progress bars, then crash with a message, "Minecraft can't run in this configuration."

 

(Still no clue what to do with Eclipse to even see any code!)