Hi all, I faced the same error "IFJS: Error while running task (null) *** -[NSCFDictionary setObject:ForKey:]: attempt to insert nil value(key:_NSTaskExecutablePath)" on invoking sysem.run in flat package but on SnowLeopard. But same thing is worked fine for me on Lion and Mountain Lion. In my case the executable lies in the Scripts folder (is created manually and parallel to Resources folder). I also tried placing the executable in Resources folder, but got the same error. According to InstallerJavaScriptGuide it should works as I am fulfilling all the prerequisite for using external scripts. ~Khushneet _______________________________________________ Do not post admin requests to the list. They will be ignored. Installer-dev mailing list (Installer-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/installer-dev/site_archiver%40lists.... This email sent to site_archiver@lists.apple.com