CS4 will not install

i have a multi-license install cs4 on 3 computers. has worked on two. "error 1603. fatal error during installation." after installation starts. have transferred files dvd desktop, turned off virus/firewall stuff , necessary start-up files , still same results. more ideas?

run cs4 cleanscript:

. if fails call
technical support quick in case close holidays.

...mike

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