Re: Own CS5, will not open, message says, "Some of the application components core missing from the Application Directory. Please reinstall the application". What do I do?

Okay here is what you need to do.. First, be sure you have your serial number. It will be on your Adobe account if you didn't buy the boxed version. Here is a link to find that: Find your serial number quickly

Now un-install CS5 and use the correct installer from this link to re-install: Download CS5 products. Now enter your serial number.

Benjamin