no, sorry, that does not work.
There is a difference between Install Manager and Download Manager. These Software parts are situated in different folders within bb/data.
When I try to start it using Utilities in BiaB, I get an error saying File C:\bb\data\DownloadManager\DownloadManager.EXE not found and it is real, this file does not exist on my pc (even I saw the folder at previous tests with this problem)
But I think, this could not be the solution of the initial problem. When you buy Biab you get a mail do download InstallManager, enter a URL and download all the software your licence is in. This download includes Biab main program. Install Manager does not run properly so you have to download BiaB main program manually and then start Install Manager from Utilities (that does also not work, as we see here). So what...