http://blogs.msdn.com/mariussutara/archive/2008/03/11/backwards-compatibility-mapper-fails-to-start-event-on-opsmgr-2007-sp1.aspxMany of you (especially those trying to monitor Exchange using converted management pack) had noticed that with Operations Manager 2007 SP1, noisy event complaining about transient state of instance discovery appeared inside of agent’s event log ratheren-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/mariussutara/archive/2008/03/11/backwards-compatibility-mapper-fails-to-start-event-on-opsmgr-2007-sp1.aspx#8205513Fri, 14 Mar 2008 19:01:33 GMT91d46819-8472-40ad-a661-2c78acb4018c:8205513DerekHar<P>Hi Marius,</P> <P>Thanks for this, it fixed issues we were having with Cluster MP discovery.</P> <P><A href="http://derekhar.blogspot.com/2008/03/cluster-mp-discovery-failing-on-sp1.html" target=_new rel=nofollow>http://derekhar.blogspot.com/2008/03/cluster-mp-discovery-failing-on-sp1.html</A> </P>http://blogs.msdn.com/mariussutara/archive/2008/03/11/backwards-compatibility-mapper-fails-to-start-event-on-opsmgr-2007-sp1.aspx#8762358Mon, 21 Jul 2008 22:09:19 GMT91d46819-8472-40ad-a661-2c78acb4018c:8762358MSutara<P>hotfix is available at <A href="http://support.microsoft.com/kb/951380">http://support.microsoft.com/kb/951380</A></P>