If you run "ant clean" at the top level or in the apps dir, the following error happens:

BUILD FAILED
C:\Users\kcr\javafx\2.1-kcr-gfx\jfx\build-src\build-components.xml:315: The following error occurred while executing this line:
C:\Users\kcr\javafx\2.1-kcr-gfx\jfx\build-src\build-components.xml:220: The following error occurred while executing this line:
C:\Users\kcr\javafx\2.1-kcr-gfx\jfx\build\xml_generated\build-apps.xml:50: The following error occurred while executing this line:
C:\Users\kcr\javafx\2.1-kcr-gfx\jfx\build-src\build-components.xml:77: The following error occurred while executing this line:
C:\Users\kcr\javafx\2.1-kcr-gfx\jfx\apps\build.xml:18: The following error occurred while executing this line:
C:\Users\kcr\javafx\2.1-kcr-gfx\jfx\apps\ga-samples\build.xml:18: The following error occurred while executing this line:
C:\Users\kcr\javafx\2.1-kcr-gfx\jfx\apps\ga-samples\BrickBreaker\nbproject\jfx-impl.xml:511: Error:
JavaFX runtime JAR not found.

This is caused by the new NB 7.1.2 project files.