我们有一个包含 install4j 的应用程序。第一步是在典型安装和自定义安装之间进行选择。自定义安装通常会弹出选择 localsettings 文件夹、appdata 文件夹以及下一步安装文件夹（默认：Program Files）的选项。
出于某种原因，在特定环境中，当两个选项都未选中时，安装继续进行而不询问所需的文件夹路径。
还创建了一个错误文件：
java.lang.ClassNotFoundException: I4jScript_Internal_12
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at com.install4j.runtime.installer.ContextImpl.runScript(Unknown Source)
at com.install4j.runtime.installer.ContextImpl.runScript(Unknown Source)
at com.install4j.runtime.installer.ContextImpl.runBooleanScript(Unknown Source)
at com.install4j.runtime.installer.ContextImpl.runBooleanScript(Unknown Source)
at com.install4j.runtime.installer.ContextImpl.runBooleanScript(Unknown Source)
at com.install4j.runtime.installer.controller.Controller.executeActions(Unknown Source)
at com.install4j.runtime.installer.controller.Controller.handleCommand(Unknown Source)
at com.install4j.runtime.installer.controller.Controller.start(Unknown Source)
at com.install4j.runtime.installer.Installer.main(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.exe4j.runtime.LauncherEngine.launch(Unknown Source)
at com.exe4j.runtime.WinLauncher.main(Unknown Source)
at com.install4j.runtime.launcher.WinLauncher.main(Unknown Source)
您能否让我知道，这种行为的原因可能是什么？