I want to use the command line 'setupnw.exe /ACU /U' to install Novell Client 4.91 Post-SP5 (IR2) (Downloads - Novell Client 4.91 Post-SP5 (IR2)), but it will prompt the following error and fail:

Error: Unable To Load Library
Unable to locate files required for SETUPNW.EXE installation.

Unable to load library: NWLANGID.DLL. (error 126)

This may be caused by running a SETUPNW.EXE contained in a Support Pack update. Support Pack updates are applied using SETUPSP.EXE and not SETUPNW.EXE.

And I need to the entire installation process be quiet, so I can't use the batch file that the website recommended, cause it will be prompted to reboot.