Eclipse on Mac, getting “Specified VM install not found” error when trying to build

Question

When I try and do an Ant build on my mac (Snow Leopard, Eclipse 3.6 - Helios) I get an error dialog that says

\"Problem Occured\"
\'Launching proje

Answer 1

Delete the ".metadata.plugins\org.eclipse.debug.core.launches\ build.xml.launch" file and problem is solved".