@Sebastian-Roth Well we’re definitely closer. The installer doesn’t fail when installing the databases but when you get to updating the database I’m still getting the Database connection unavailable error. Is this something to do with the blank vs not blank password (I mean, I’ve not yet set a DB pass)?
On the Advanced Task page, this wording under All Snapins does not suggest only assigned snapins will be installed:
This option allows you to send all the snapins to host without imaging the computer...
could instead say:
This option allows you to send all the snapins which are assigned to the host without imaging the computer...
Also, to offer clearer indication to persons attempting to push snapins to an existing PC, add a pop-up or append to the existing “Host Update Success” popup a message such as:
Note: to deploy these snapins to an existing image with the FOG service running, click the "All Snapins" link under Basic Tasks -> Advanced to create the task.