Before you try reinstalling, you will first need to remove all previous Pace or iLok software from the computer.
1. Click on Start> Control Panel and click on either Programs and Features, or Uninstall a Program.
2. In the top right corner of the Window, type the word Pace, then uninstall any software that has PACE Anti-Piracy as the publisher name including the C++ Redistributables. Remove all of the items before rebooting the computer.