That version of ActivDriver is really quite old now and it my be that your computer needs a newer version to run.
You can find the latest version by going to http://www.PrometheanKB.com and searching for article 10902.
If this still fails then please check that the account you are using to install has full admin rights.
Please let us know if this resolves your issue.
Promethean Technical Support
(Support case: 570718)
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