Christophe ROCHEFOLLE sais, In CompilerConfig, to check if we have to unpack a file, we have the following line: boolean unpack = src.endsWith(".zip") && true".equalsIgnoreCase(f.getAttribute("unpack")); In my setup, I need to unpack a WAR files to be able to customize some resource file depending of current installation, so I change it to: boolean unpack = (src.endsWith(".zip") || src.endsWith(".war")) && "true".equalsIgnoreCase(f.getAttribute("unpack")); To follow current rule, but I suggest removing the extension to test to put: boolean unpack = "true".equalsIgnoreCase(f.getAttribute("unpack")); It is the responsibility of the setup designer to provide a true archive file, what do you think about it? Kriss http://izpack.org/community/berlios-lists-archives/izpack-users/2007-June/001543.html