Hi Stephen, VTANativeAdjuster in current Soot release is based on JDK library 1.1.8. Obviously there are changes between 1.1.8 and 1.3.0, and even 1.4.0 which we did not look in yet. So it may produce incorrect answer if you are applying VTA on JDK 1.3.0. Cheers, =========================================================== Feng Qian fqian@sable.mcgill.ca