Virtual Vault Cache missing from Indexing Options Control Pannel App

Hello, I am running Windows 7 32bit with Office 2010 and Enterprise Vault Outlook Addin v10.0.3.1189. Recently I have noticed that the virtual vault cache is missing from the list of places to index in the "Indexing Options" controll panel app. I have tried uninstalling/reinstalling the Outlook addin with no success. Any ideas?

Thank you!