The Adobe Acrobat 9 Pro that came with my Adobe Design Premium CS5 package no longer launches. I haven't made any changes to my computer and am still using Windows 7 Professional. I've tried to repair from my computer's Control Panel. I had a choice of modify, repair, and uninstall and I tried the first two. I was hesitant to uninstall since I was concerned that I may not have saved the serial number. I've also tried to download the updates from Adobe by clicking on the update for Adobe Acrobat 9.5.5. The update took a long time to install and then nothing. Adobe Acrobat 9 Pro still wont launch.
You should post in the Acrobat forum and please be prepared to provide full system details.
This has nothing to do with InDesign.