Eclipse will not recognize my Scala main - eclipse

Question

What I've tried:
Ensuring Scala perspective is set, disabled, set again
Ensuring that I right click on the Object that extends App
I never get 'Run as Scala application...' at this point
Defining an explicit 'main' in Object after removing 'extends App'
What I get is 'Run Configurations..." when I right-click on Object with main(). No matter what I do there, e.g. enter name of Object that extends App or has an explicit main, main() is never found and I get classloader stack trace dumps indicating that there is no main.
While I get no Scala compile errors, no matter what I try, I never get 'Run As...Scala Application'.
Code:
object fatfinger extends App {
import com.mongodb.casbah.Imports._
import Common._
import MongoFactory._ */
object Insert {
def main(args: Array[String]) {
val apple = Stock("AAPL", 600)
val google = Stock("GOOG", 650)
val netflix = Stock("NFLX", 60)
saveStock(apple)
saveStock(google)
saveStock(netflix) }
def saveStock(stock: Stock) {
val mongoObj = buildMongoDbObject(stock)
MongoFactory.collection.save(mongoObj) } }
}
Stacktrace:
Exception in thread "main" java.lang.NoClassDefFoundError: Insert
Caused by: java.lang.ClassNotFoundException: Insert
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)