Can't use debug in 818

I am trying to debug a set of classes by stepping through them with breakpoints. However, when when I use the debug run method (the little bug icon) I get an error saying it can't find the main process even though it runs just fine when I run it normally (using the play button). I have been doing debugging with 816 and it worked just fine. Has anyone else seen this problem with 818 and know of a work around?

I am using JVM 1.3.1_08 and my main looks like:

public static void main( String args[] )
{
}

Thanks,
Grant