Can't open PhotoshopCS4Extended all of a sudden

Suddenly it won't open when I click on any button or link; and I can't find the exe. file in my program files. So here's my question: I have the install disc I bought a couple of years ago. If I take the scary step of uninstalling CS4 from my computer will I be able to reinstall from my disc or is it only good for one initial install? Or, will I have to have an authorization # or something?
Thanks so much for your invaluable help!
Neil
San Francisco

File loss isn't something to be glossed over...
Have you been doing things in Windows Explorer near the C:\Program Files\Adobe... area? Sometimes subfolders get dragged to folders next door accidentally. Usually the recovery from this is just to drag them back to the right place.
You really do need to explain why files would suddenly go missing on your computer before trying to recover from the failure, or you just chance losing more.
Once you understand what happened, your best bet would be to recover the files directly if at all possible. Do you have backups?
In answer to your question, if you do have to reinstall you may well be able to activate again without trouble on the same computer, but you will have to call Adobe if you can't. Usually they'll fix you right up. There's no limitation to the number of times you can reinstall from the same disc.
-Noel

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Can't open PhotoshopCS4Extended all of a sudden

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