NSM3.1 for AD, installed on a Windows 2008 R2 server.
Last week, everything was working fine.

Yesterday, when I run NSMAdmin I have the windows : Welcome to the Setup
And finaly I have the error : Error configuring Proxy Rights group: The
object in Directory Services has a class or attribute mismatch and is
not valid.

My colleague have delete the NSMProxy objects and reinstalled the
Engine, Event, Agent and NSMAdmin. And now its works again.

My question is : is there a way to correct the error without deleting
objects and reinstalling everything?