I have a batch file that runs:

msiexec.exe /I R:\zfd651b\ZfDAgent.msi STARTUP_APPEXPLORER=1
NAL_SINGLE_TREE=1 ZENWORKS_TREE=TREE /qr

(we only put this in the login script to catch those people that may
have shut their NAL off).

The above works fine.

BUT if I put in:

msiexec.exe /I R:\zfd651b\ZfDAgent.msi STARTUP_APPEXPLORER=1
NAL_SINGLE_TREE=1 ZENWORKS_TREE=NYS_DEPT_ENCON /IGNORE_3RDPARTY_GINA=1
/qr

then the msiexec chokes with an invalid parameter?

But if I deliver that property via ZENworks NAL, then it works fine.

????