SEP 12.1 RU2 client install

Hello,

We upgraded SEPMs from SEP 11 RU7 MP2 to SEP 12.1 RU2 (confirming suppoted migration path).  Exported client packages for 64-bit and 32-bit platform, with the installation type to "show progress bar only".  Installation goes fine and install process runs liveupdate which also completes, but LiveUpdate Status windows does not close by itself.  Initially  I though it could be time issue and tried couple of clients over hrs and even over night, even then one has to click "close" button to close startus window.

There  was no such issue when we used "unattended" in packages for SEP 11 in any of its builds.

Any body experienced such behavior.

Thanks & Regards,

pg