CS5 is not part of the Cloud, so operates completely independent of Cloud "CC" programs
By download, do you mean INSTALL, or do do mean download the software from the Internet?
For Windows, you must INSTALL software for it to work correctly, since installing makes entries in the Windows Registry file... I do NOT know what would happen on a Mac if you drag the program folder to an external and back
Again for Windows, you need to DE-activate before you UN-install... then simply install like you did before, from your original disc set
Thanks for the reply John.
You see the problem I have is that when I purchased CS5 I simply downloaded and installed the applications from the Adobe website and was not sent any discs. I presume there is no longer a way to download previous versions of Adobe software that you have purchased, so uninstalling CS5 would mean I would lose it.
Welcome to Adobe Forum,
All older version trials are removed from Adobe website other than CS6. You can download the trial for Ai CS5 from the following location:
http://prodesigntools.com/all-adobe-cs5-direct-download-links.html and by following the very important instructions before downloading.
If you bought CS5 by download, it should still available in your customer's area. Check this link: http://helpx.adobe.com/creative-suite/kb/find-download-link.html
If it was a AVL license, you will have to log in https://licensing.adobe.com. More in http://helpx.adobe.com/x-productkb/policy-pricing/volume-licensing-site.html#download
If you didn't bought by download, but a boxed product, try http://prodesigntools.com/all-adobe-cs5-direct-download-links.html
>downloaded and installed the applications from the Adobe website
Things happen and software changes... as you have discovered, you should always write your download files (and a text file with your serial number) to a DVD as a backup and/or copy to a folder on an external hard drive