If the Vault Client is installed on a system with no full Inventor version, the user gets the following error message when he tries to 'open' a file from the Vault Client:

Even if Inventor View is selected as the default application for Inventor files, the files won't open from Vault unless you use the function 'View in Window..'. All other file types are downloaded to the workspace and 'opened' with the standard application.
The usual workaround is to select 'Invoke on doubleclick: View in Window...' within the Tools - Options menu. But this is not set by default, and the user has to find this solution before he can use the software frictionless 'out of the box'.
Please improve the experience of new users by making the 'Open' functionality work more 'intuitive' if no full Inventor version is installed.