My Passport 2 TP needs a plug-in and Backups the wrong files/folders


I stopped Back Up to keep it from adding 289 GB on every scheudule Microsoft Management Console reports "The required plug-in failed to reinstall. Should I ?..
How do I create the plug-in.
Is this a sign that MY Passport is damaged ? Can I safely erase and re-install ?
Backup creates 289 GB on My Passport when it Back Up’s. Can I delete File History safely ? How do I change that ?

Help ! Thank you jolhoss