@Scott
I think that error and the problem to install are due an miss in the programation of the launcher file, they NOT allow to run as Administrator, either leave the chance of set (as Admin) via properties
Doesnt matter if the launcher ask for permision, that is a common in the Windows ''defence'', is the same for any .exe, but if they dont allow the ''code'' to set as Admin IN the launcher...may that cause the problem....??
An example with other exe, where there ALLOW to set as Admin..