[NetBrainTAC]

Problem:
When the topology map of a device group was first created, it would remain unchanged even if you performed some operations to it (e.g. add or delete devices in this device group).

**Root cause:
In very rare cases, the installation process cannot be performed. A window pops up that says: "The action can’t be completed because the file is open in another program, close the file and try again." Sometimes, the installation still cannot be performed after the files are closed. The reason is that the OS still locks the process in the background.

**Solution:
Unlock the files from the OS. Refer to the following link to download the free software called Unlocker to unlock the files. Then try it again.
http://www.netbraintech.com/ftp/supp...ocker1.9.1.zip

Applicable to: OE all versions.