When trying to use the build.bat I got an errormessage that build.bat was failing with error "xmltask....etc".
This happen due to a missing xmltask-......jar file in the tools\ant\lib directory.
I downloaded xmltask-v1.15.1.jar from oopsconsultancy website, changed the classpath in the build.bat and everything worked as it should.
If the file isn´t part of the release I think you should inform in your installation instructions that this file have to be downloaded manually.

Regards

//Bengt