On http://ant.apache.org/manual/CoreTasks/exec.html there is listed a Red Hat S/390 Users fix for when you see: [exec] Warning: UNIXProcess.forkAndExec native error: Exec format error [exec] Result: 255 My observation is that this fix applies to not just S/390, but to the wider audience of those using the IBM JDK (and not the Sun JDK, which doesn't care if your shell scripts have an interpreter speficied on line 1). I was running a build using the Sun JDK 1.4.2_03 on debian, and switched to IBM JDK 1.4.2sr1 and encountered this - ahem - forking error. The suggested fix - namely to add a #!/bin/bash or #!/bin/sh interpreter line to the head of the .sh script being exec'd - worked to solve the problem and the build continued as it had been before w/ the less restrictive / more forgiving Sun JDK. Since this fix, as stated in your manual, is not immediately obvious as being a solution (for those who can't make the leap that S/390 = IBM JDK), I just thought I'd point out that you can - if you'd like - add this extra bit of help to your manual. Thanks, Nick Boldt :: Programmer-Polyglot Eclipse EMF/SDO/XSD Websphere Studio Development, Toronto Lab 8200 Warden Ave., Markham, Ontario, L6G 1C7. http://eclipse.org/emf && http://eclipse.org/xsd --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]