cocoon-2.1.4-dev: Build failed

[Bart Remmerie]

File core/commons-jexl-1.0-beta-1-20030113.jar is declared in 
lib/jars.xml, but doesn't appear in the lib/ directory.
File which does appear is core/commons-jexl-1.0-beta-1-20040113.jar

Regards,
Bart