java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at com.install4j.runtime.beans.actions.desktop.AddToDockAction.install(AddToDockAction.java:41)
at com.install4j.runtime.installer.InstallerContextImpl$2.fetchValue(InstallerContextImpl.java:170)
at com.install4j.runtime.installer.InstallerContextImpl$2.fetchValue(InstallerContextImpl.java:167)
at com.install4j.runtime.installer.helper.comm.actions.FetchObjectAction.execute(FetchObjectAction.java:14)
at com.install4j.runtime.installer.helper.comm.HelperCommunication.executeActionDirect(HelperCommunication.java:266)
at com.install4j.runtime.installer.helper.comm.HelperCommunication.executeActionInt(HelperCommunication.java:241)
at com.install4j.runtime.installer.helper.comm.HelperCommunication.executeActionChecked(HelperCommunication.java:179)
at com.install4j.runtime.installer.helper.comm.HelperCommunication.fetchObjectChecked(HelperCommunication.java:162)
at com.install4j.runtime.installer.InstallerContextImpl.performActionIntStatic(InstallerContextImpl.java:167)
at com.install4j.runtime.installer.InstallerContextImpl.performActionInt(InstallerContextImpl.java:155)
at com.install4j.runtime.installer.ContextImpl.performAction(ContextImpl.java:1058)
at com.install4j.runtime.installer.controller.Controller.executeActions(Controller.java:318)
at com.install4j.runtime.installer.controller.Controller.handleCommand(Controller.java:170)
at com.install4j.runtime.installer.controller.Controller.start(Controller.java:91)
at com.install4j.runtime.installer.Installer.runInProcess(Installer.java:41)
at com.install4j.runtime.installer.Installer.main(Installer.java:28)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.exe4j.runtime.LauncherEngine.launch(LauncherEngine.java:62)
at com.install4j.runtime.launcher.MacLauncher.main(MacLauncher.java:65)

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