So I have gathered that a handful of tasks now have a 'failonerror' attribute, so one can dictate whether certain types of errors should be considered fatal --- but the <ant> task does not appear to be among them. Could I nominate this as a feature request for a future release of ant? Our technology integration folks want the build tool to attempt to build everything, no matter what, so right now we're doing a 'find . -name build.xml' on our source tree, and then feeding each build.xml to ant one at a time. Not the best way to run a railroad. At first I thought that the 'failonerror' attribute in the <javac> task would solve all our problems --- and it goes a long way toward that goal --- but the build is still ending prematurely if an <ant> subtask fails for some reason (a build file doesn't exist where it should, for example). Just a thought, --dave