Run executable at end of installation. Admin privileges?

Question

Hi all,
As always, please forgive this questioning if it has already been answered somewhere.
Here is my scenario:
I have a batch file with the following in it:
cd C:\Temp\install\anotherInstaller
setup.exe /q /AcceptLicenses yes
"anotherInstaller" is an installer for a different LabVIEW application that I am including with the main one.
I run the batch file from the "Advanced" page of my installer under "Run executable at end of installation."
I run my top level installer with admin privileges in Windows 7 x64.
The installer hums along and everything works as expected until the batch file gets called.
The batch file gets called successfully by my top level installer, but "anotherInstaller" doesn't run.
The batch script works fine if I run it by itself with elevated privileges, but doesn't run anotherInstaller if it is called by my top level installer.
My theory is that the executable called under "Run executable at end of installation" does not execute with elevated privileges, even if the top level installer does.
Can anyone verify this?
Is there any other reason why my second installer won't work?
Thanks in advance,
Jim

Answer 1

Okay, it does appear to execute with elevated privileges, and I have a new clue:
When I turn off the "/q" option on anotherInstaller, the following message appears in a dialog:
"Error: Another Installation/uninstallation session, deployment session, or NI Update Service is running. Finish that session and try again."
Ugh.  Anyone know of a good way to "piggyback" another LabVIEW built installer as part of a batch file?  (I have a whole ton of other housekeeping I handle in my batch file, so I can't very well avoid using the batch file.)