omitting that switch leads to a reboot that comes unexpected for the script. Using the switch 'reboot=reallySuppress' just leads to an error message popping up at the end. But the german version thinks it needs a reboot at the end. This works for the French and English setup just fine (its a multilanguage edition).
Setup.exe PIDKEY=xxx CLIENTLANGUAGE=EN ADDLOCAL=ALL REBOOT=ReallySuppress /qn
I had no trouble installing crystal reports xi using this string:
