Unable to produce a Mac AppStore package with the Ant interface (but fine with packager Java API)

For some reason fx:deploy gives hand back quite quickly (it created html and jnlp), the pkg is not created and the output is sparse, no error message (see build.ant.out).

The xml file used is attached: if you want to reproduce the case go with the zip file that contains all bricks.

When using the Java API I manage to get the awaited package: read in build.api.out the list of all params used as well as full verbose output.