K-Lite uses Inno Setup Installer. For that just use
NexusFontSetup2.5.8.exe /VERYSILENT /SUPPRESSMSGBOXES /NORESTART /SP- /LOG="%TEMP%\NexusFont-2.5.8.log"
For more information about msi command line parameters take a look at the following Page:
http://www.jrsoftware.org/ishelp/index.php?topic=setupcmdline
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