HVS,
Yes. I got it working, but not without some grief. I have a batch file that runs the msi in the Exceptions folder. That's the last thing I tried and it seems to work. The syntax I'm using is:
start /wait msiexec.msi /i "Exceptions\LTRM5.6en_US\[my-package-name].msi" /qb
(I'm using the /qb rather than /qn for my own peace of mind)
There's also an msi and a setup.exe in the Build folder but neither of them work. There's no LTRM5.6en_US folder there and that breaks it. (You'll see a very ambiguous return code if you turn of the /n option.)
There is one problem I discovered with deploying Lightroom 5: the application does not respect the update selection I made in the application builder. The "update" option in the Help menu remains enabled. Updating Lightroom from the Help menu will cause it to loose its serialization and it will need to be reinstalled. Basically, rather than updating I have to tell our techs to install the latest version of the program from the packages I create. I'm hoping this is a but that Adobe will eventually fix.
Ric