The answer is ADOBE are s***e. Fed up with all this malarkey, will return disc for a refund and buy a real program that works without having to download,reinstall,reboot or whatever.
This is far too common a problem and no other download/installation I have bought/used has ever proven so problematic.
Sorry folks, I know most of you are content but this is not an isolated problem and Adulldulldullbe should have sorted this before release,why should I have to reconfigure anything to accomodate their software, if it isn't 100% it should only be released under the proviso it's a test run and for free.
Rubbish.
Phew,and breath, sorry for the rant.