You've noticed that add in modules such as Inventor Studio, Content Center or Vault add-ins, and so on do not work properly after an install or update of Inventor. Standard tools seems to work fine, but you notice some buttons not working or are grayed out, and or you get a "Command not loaded" message. Sometimes there are missing add-ins in your add in manager.
Solution:
Follow these links to find the Inventor add-in repair utility and the How to Register your missing Add-Ins knowledge base article:
http://usa.autodesk.com/adsk/servlet/ps/dl/item?siteID=123112&id=13909656&linkID=9242018
http://usa.autodesk.com/adsk/servlet/ps/dl/item?siteID=123112&id=13404176&linkID=9242018
