I use the install.xml from http://docs.codehaus.org/display/IZPACK/Writing+Installation+Descriptions:
When I run IzPack 5.0.0-beta5 compiler on it with:
I have installer.jar created. But when I launch it it silently fails.
If I launch it through:
If I add ..\lib* to the classpath explicitly during running the installer, it works perfectly:
Windows 7 32bit