Here is the Fix to your problem Took me 10minutes to figure out
First run the Forge before you use anything when it give you the error keep reading
\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-library\2.10.2
\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-compiler\2.10.2 also make sure you put it in side
Download both of the files
Put them inside the folder
and start up the game it will launch
Here are the links
http://repo.maven.apache.org/maven2/org/scala-lang/scala-compiler/2.10.2/scala-compiler-2.10.2.jar
http://repo.maven.apache.org/maven2/org/scala-lang/scala-library/2.10.2/scala-library-2.10.2.jar
Now get out there solider that's an order
A Thank you / Applaud wont kill you will it?