Hi all involved, Please excuse, but due to the complex targets, I can only described my problem in general. No exception or error message is shown during the build process. We run some complex ant targets with a lot of delegation and therefore a lot of inherited properties. Actually ant 1.6.1 is used and the behaviour of the script call is the following: If we do NOT set a -verbose of the build the result is not the expected one, while setting -verbose [>log.log] the result of the build process is the expected one. Anyone seen anything like that? Is there a different behaviour while running the build with -verbose? Actually we can reproduce the problem on windows XP SP2 machines with JDK 1.4.2_05. On XP SP1 machines we cannot reproduce this problem. I'm investigating also on MS side, thanks for hints Markus