i don't know, why this suddenly happens, but everytime i integrate a build-script in eclipse and start a task, eclipse crashes immediately and shows only the crash-window with:
JVM terminated exit code=1
follwed by the (default) settings of the JVM
for testing purposes i wrote a very elemental script only with an echo:
<project name="Test" basedir="." default="test">
this runs fine with ant in command shell but crashes eclipse. i also used java 1.4.2 instead of 1.5, but no result.