I installed a trial version of InDesign. I purchased creative cloud before the trial version expired. I deleted the trial version today. Now when I go to download InDesign from Creative Cloud the adobe application manager tells me it is already installed. What do I do?
Try using the Adobe Creative Suite Cleaner Tool to correct the problem: http://www.adobe.com/support/contact/cscleanertool.html
You probably just dragged the InDesign folder to the trash but that's not the way to uninstall an Creative Suite program. You need to run the Uninstaller. (There was an alias to it in the InDesign folder. On a Mac, it's in Applications > Utilities > Adobe Installers.)
You can also run the Adobe Cleaner tool application: