When you use the AODocs Smartbar, your documents in Google Drive must be displayed in list layout and not in grid layout.
To switch from grid layout to list layout, open Google Drive and click the List view button.
When you have switched to list layout, your Google Drive interface looks like this:
Note: Smartbar features are available in the Google Drive file preview for Google files and non-Google files. You can access the file preview directly from grid mode.