Somewhere between the June 1 and current build, the "target" attribute of the "ant" task seems to have stopped working:
<ant dir="sub" target="main2"/>
Class class doesn't support the "target" property
The Ant class does indeed have a java.lang.String property named "target", and it has a proper setTarget(String s) method.  However, its superclass Task also has a setTarget() method, but the property data type is Target, not java.lang.String.  This is enough to confuse the BeanInfo into ignoring the setTarget() method in Ant.
It definitely works in the June 1 version, but I can't tell why - the configure() method in ProjectHelper was not changed.
Any ideas?