Hi Guys,
I was able to resolve the issue - thinking, though i had uninstalled Visilogic through add remove applet, i thought i'd go a step further and run a scan with the below software.
http://www.revouninstaller.com/
This found many old folders, being the main cause of the issue - Once fully removed i was able to install the latest version, operating without issue.
Thanks again for your help!
Best regards,
Warrick