May be related to JDK-8124950, but that was reported against JDK 7 and I found JDK 8 to be working.
Bundler MSI Installer skipped because of a configuration problem: Main application jar is missing.
Same command line runs with Java 8 and produces a .msi file
Command line args are:
c:\Program Files\Java\jdk-9.0.1\bin\javapackager, -deploy, -verbose, -nosign, -native, msi, -vendor, My Company, -description, My Server Administration Application, -outdir, C:\dev\MyServerAdminApp\build/distribution, -outfile, MyServerAdminApp, -name, My Server Admin, -appclass, com.example.server.ui.MyServerAdminApp, -srcdir, C:\dev\MyServerAdminApp\build\libs, -srcfiles, MyServerAdminApp-1.0.4.jar, -srcfiles, ServerWSClient-3.1.3.jar, -srcfiles, Server-3.1.3.jar, -Bruntime=C:\Program Files\Java\jdk1.8.0_152\jre]
Bundler MSI Installer skipped because of a configuration problem: Main application jar is missing.
Same command line runs with Java 8 and produces a .msi file
Command line args are:
c:\Program Files\Java\jdk-9.0.1\bin\javapackager, -deploy, -verbose, -nosign, -native, msi, -vendor, My Company, -description, My Server Administration Application, -outdir, C:\dev\MyServerAdminApp\build/distribution, -outfile, MyServerAdminApp, -name, My Server Admin, -appclass, com.example.server.ui.MyServerAdminApp, -srcdir, C:\dev\MyServerAdminApp\build\libs, -srcfiles, MyServerAdminApp-1.0.4.jar, -srcfiles, ServerWSClient-3.1.3.jar, -srcfiles, Server-3.1.3.jar, -Bruntime=C:\Program Files\Java\jdk1.8.0_152\jre]