Launch4j for Spark - manifest issues

I’m trying to wrap my skinned version of Spark with launch4j to save money (rather than buying install4j). I put all the info in and attempted to build/launch it but I keep getting a manifest issue. Actually, I didn’t know what to put there. I extracted the manifest file from spark.jar but that didn’t work. I really don’t know what I’m doing, so any help is greatly appreciated.

As a side note, I went into Eclipse and tried to extract my project into a jar and set it to include the manifest, but it erred out before it was done. Story of my life.